How can I tell if my cat is pregnant?

The first reliable sign is 'pinking up' — her nipples turn noticeably pinker and larger around day 15 to 21. Before that there is usually nothing to see. After week 3 you will typically notice a bigger appetite, steady weight gain, and from about week 5 a rounding belly. A vet can confirm it with an ultrasound from around day 15 to 21.

What are the signs of cat pregnancy two weeks after mating?

Honestly, usually none. At two weeks the embryos are only just implanting and there is no reliable outward change. The one early hint is that she stops going into heat — no more calling or rolling. Wait until week 3 for pinking up, or ask a vet about an ultrasound.

What does a pregnant cat's belly look like?

It changes very little until about week 5, when it starts to round out behind the ribs. By week 6 it is clearly larger and slightly pear-shaped, and by weeks 7 to 9 it is obviously swollen and hangs lower, sometimes with visible kitten movement. The swelling is firm and even — a lopsided, doughy or suddenly swollen belly needs a vet.

Can a cat be pregnant without looking pregnant?

Yes, particularly in the first four weeks, with a small litter, or in a cat that was already a little overweight. Some cats carrying one or two kittens barely show until the last couple of weeks. An ultrasound or, after about day 45, an X-ray will settle it.

Can cats have a false pregnancy?

It is uncommon but possible, usually after a mating that did not result in conception. The cat may show pinking up, nesting and mild weight gain for around 40 to 45 days, and then the signs fade without any kittens. A vet ultrasound tells the difference quickly.

How soon can a vet confirm a cat pregnancy?

An ultrasound can detect a pregnancy from about day 15 to 21 and show kitten heartbeats a few days later. Gentle palpation works from roughly day 17 to 25. A relaxin blood test works from around week 4, and an X-ray from about day 45 can count the kittens.

Is My Cat Pregnant? 9 Signs to Check, Week by Week

Your cat got out for a night, or you have a new rescue who arrived a little round, and now you are watching her closely. The frustrating truth is that for the first two weeks there is usually nothing to see. From week 3 onwards, though, a cat's body gives clear signals in a predictable order — and once you know them, you can tell not just whether she is pregnant but roughly how far along.

Quick Answer

• Weeks 1–2: usually no visible signs.
• Week 3: nipples turn pink and larger — the first real sign.
• Weeks 4–6: bigger appetite, weight gain, belly rounding.
• Weeks 7–9: clearly swollen belly, kitten movement, nesting.
• A vet can confirm by ultrasound from about day 15–21.

Think she's pregnant? Find her due date

Enter the mating date — or just the signs you've noticed — to see which week she's in and when the kittens are due.

Open Cat Pregnancy Calculator

Signs of Cat Pregnancy Week by Week

What you can actually see, stage by stage:

Stage	Days	Signs You Can See
Weeks 1–2	Days 1–14	Usually nothing visible. The one clue: she stops going into heat.
Week 3	Days 15–21	Nipples turn pink and larger (“pinking up”). Mild morning sickness in some cats.
Weeks 4–6	Days 22–42	Bigger appetite, steady weight gain, belly starts to round from week 5.
Weeks 7–9	Days 43–67	Belly clearly swollen, kittens may be felt moving, nesting, possible milk.

This covers what you can spot from the outside. For what is happening inside each of the nine weeks, see the cat pregnancy timeline and stages chart.

The 9 Signs to Check

In roughly the order they appear. No single sign proves pregnancy on its own — several together, appearing on this timeline, is the pattern that matters.

1.Pink, enlarged nipples

Week 3

Called “pinking up”, this is the first sign you can rely on. Her nipples turn a noticeably deeper pink and become larger and more prominent. It is easiest to spot in a cat that has never had kittens.

2.Her heat cycles stop

Weeks 1–3

An unspayed cat normally comes back into heat every two to three weeks — calling, rolling and restless. If that pattern stops after she has been with a male, pregnancy is the likeliest reason.

3.Mild morning sickness

Weeks 3–4

Some cats vomit occasionally or go off their food for a few days. It is brief and mild; repeated vomiting or a cat that stops eating is not normal and needs a vet.

4.A much bigger appetite

Week 4 onwards

Her energy needs climb steadily, and by late pregnancy she may eat about half as much again as usual.

5.Steady weight gain

Week 4 onwards

Typically 1–2 kg (2–4 lb) in total over the pregnancy, depending on litter size. Weighing her weekly on a kitchen or baby scale makes this easy to track.

6.A rounding belly

Week 5 onwards

The belly begins to round out behind the ribs around week 5 and is clearly swollen by week 6. It should feel firm and even, not soft or lopsided.

7.Behaviour changes

Any time

Many pregnant cats become noticeably more affectionate and seek attention; others get quieter and prefer to be left alone. Either can be normal.

8.Kittens moving

Week 7 onwards

Rest a flat hand very gently on her side while she is relaxed and you may feel movement. Never press or try to feel for individual kittens — you can hurt them.

9.Nesting

Week 8 onwards

She starts looking for warm, quiet, hidden places — cupboards, under beds, the back of a wardrobe. This is the time to set up a birthing box.

Signs Two Weeks After Mating

This is one of the most common questions, and the honest answer is disappointing: at two weeks there is usually nothing to see. The embryos are only just implanting, and her body has not changed in any way you can spot.

The one early clue is behavioural. An unspayed cat normally returns to heat every two to three weeks. If she was calling and rolling before she met a male and has since gone quiet, that is a meaningful hint. Otherwise, wait for pinking up in week 3 — or book a vet ultrasound, which can detect a pregnancy from around day 15 to 21.

Pregnant Cat Belly Stages

Weeks 1–4: no change

Her waistline looks exactly as it did. Do not read anything into a normal-looking belly this early.

Week 5: first rounding

A subtle fullness behind the ribs, easiest to see from above or when she stretches out.

Week 6: clearly larger

The belly widens and takes on a slightly pear-shaped look from above.

Weeks 7–9: obviously pregnant

Swollen, hanging lower, and sometimes visibly moving when she rests. She may struggle to groom her rear end.

A healthy pregnant belly swells evenly and firmly. A belly that is lopsided, soft and fluid-feeling, or that swells over just a few days is a different problem — see the next section.

Is It Pregnancy or Something Else?

Several conditions can make a cat look pregnant. Some are harmless; two are emergencies:

Condition	How it differs
Simple weight gain	Fat spreads over the whole body, not just the belly, and there is no pinking up.
Worms	A round, pot-bellied look, most often in kittens and young cats, often with a dull coat.
False pregnancy	Pinking up and nesting after a mating, but the signs fade after 40–45 days with no kittens.
Pyometra (emergency)	A womb infection. Swollen belly plus lethargy, heavy drinking, and often a smelly discharge.
Fluid build-up / FIP (emergency)	Belly swells quickly and feels soft or fluid-filled; often with fever and weight loss elsewhere.

Don't wait on these. A swollen belly with lethargy, fever, heavy drinking, or any discharge is not a pregnancy to watch — it is a same-day vet visit. Pyometra in particular can become life-threatening within days.

How a Vet Confirms It

Four ways, by timing

Ultrasound — from about day 15–21. The earliest reliable test, and it shows heartbeats a few days later.
Palpation — roughly day 17–25. A vet gently feels for the small swellings. Never try this yourself.
Relaxin blood test — from about week 4. Detects a hormone produced only in pregnancy.
X-ray — from about day 45.The kittens' skeletons show up, so this is the way to count them.

Knowing the kitten count is more useful than it sounds: it is how you know she has finished giving birth. Once you have a rough date, the cat pregnancy calculator will map out the key dates from here.

What to Do Once You Know

• Book a vet check to confirm and make sure she is healthy.
• Switch to kitten food from around week 4 — it has the extra calories and protein she needs. Our cat food calculator helps with portions.
• Keep her indoors for the rest of the pregnancy.
• Set up a birthing box by week 8 — a quiet, warm, low-sided box lined with towels.

The Bottom Line

Don't expect to see anything in the first two weeks. The first sign you can trust is pink, enlarged nipples around week 3, followed by a bigger appetite, weight gain and — from week 5 — a rounding belly. Several signs together on that timeline point strongly to pregnancy; a vet ultrasound makes it certain. And a swollen belly that comes with lethargy, fever or discharge is not pregnancy until a vet says it is. When you are ready, work out her due date with the Cat Pregnancy Calculator. 🐱