Also written 4+2 or 4w2d
The short answer
4 weeks 2 days = 1 month
At 4 weeks 2 days pregnant you are about 1 month pregnant — day 30 of your pregnancy, in month 1 and your first trimester.
Not sure of your exact week and day? The pregnancy week calculator works it out from your last period, due date or conception date.
250
days to go
35
whole weeks + 5d
11%
complete
You are 30 days into a 280-day pregnancy, so there are 250 days — 35 weeks and 5 days — left until you reach 40 weeks. Bear in mind that the due date is an estimate: only about 1 in 20 babies is born on it, and most arrive within two weeks on either side.
Next milestone: 68 days until the second trimester (14 weeks 0 days).
Months of pregnancy are counted in uneven buckets of 4 to 5 weeks, arranged so that the full 40 weeks fits into 9 calendar months. Week 4 sits inside month 1, and it stays there for all seven days of the week — so 4 weeks 0 days and 4 weeks 2 days are both "1 month pregnant".
If you want the strict calendar answer instead, divide by the real length of a month rather than by four: 30 days ÷ 30.4375 days per month = 1 calendar months. That figure drifts from the bucket-based month number, which is exactly why your care team sticks to weeks and days.
The days part matters clinically even when the month doesn't. Screening windows, term definitions and induction timing are all set by exact week and day — full term starts at 39 weeks 0 days, not "9 months". See the full weeks to months chart for every week.
Implantation is wrapping up and a sensitive home test may already turn positive. The embryo is about the size of a poppy seed, and the neural tube — the start of the brain and spinal cord — is beginning to form.
Read the full week 4 breakdown →
| Week + day | Months pregnant | Days pregnant | Days to go |
|---|---|---|---|
| 4 weeks | about 1 month | 28 | 252 |
| 4 weeks 1 day | about 1 month | 29 | 251 |
| 4 weeks 2 days (you) | about 1 month | 30 | 250 |
| 4 weeks 3 days | about 1 month | 31 | 249 |
| 4 weeks 4 days | about 1 month | 32 | 248 |
| 4 weeks 5 days | about 1 month | 33 | 247 |
| 4 weeks 6 days | about 1 month | 34 | 246 |
At 4 weeks 2 days pregnant you are about 1 month pregnant — day 30 of your pregnancy, in month 1 and your first trimester. Months of pregnancy are counted as uneven 4–5 week buckets so the full 40 weeks fits into 9 calendar months, which is why the extra 2 days doesn't change your month number.
"4+2" is the shorthand your midwife or doctor uses for 4 weeks 2 days — the number before the plus is completed weeks, the number after it is completed days into the current week. You may also see it written 4w2d. Both mean exactly the same thing.
4 weeks 2 days is 30 days, counted from the first day of your last menstrual period (4 × 7 = 28, plus 2). That leaves 250 days — 35 weeks and 5 days — until the 40-week mark.
About 35 weeks and 5 days until 40 weeks. Only about 1 in 20 babies arrives exactly on the estimated due date, though — most are born within two weeks on either side of it.
4 weeks 2 days is in the first trimester, which runs from 0 weeks 0 days through 13 weeks 6 days. The second trimester begins at 14 weeks 0 days.