So my OB. Considers week 13-26 the 2nd trimester. But I keep reading all this crap online about week 14 starting the 2nd…

Yeah my brain hurts now

@edomke, lucky girl! I'm 13 weeks today!

Lol idk all I know is I'm almost done. Thank the lord! 🙏🏻

@danamarie, Ohhh. Ok.

@edomke, oh no. That's no fun!

It took me a minute to figure out how the f there could be such a discrepancy when it's just math?! :-/

There s 52 weeks in a year which means 4.3 weeks per month, the extra .3 you aren't counting if you use your methodology thus the discrepancy. Then if you take 4.3 weeks per month times 9 m weeks! This is why some docs count the 13th in the first. If you look at a calendar you will see not ONE month is 28 days (4 weeks exactly except Feb) and why you have to add the extra days in. Most months are around 30-31 not 28 (4 weeks * 7 days = 28 days for 4 weeks). Make sense?

For me my doctor said 15 weeks for second trimester

Well 36 weeks is 9 months. But most people can be pregnant all the way up until 40 weeks. And 40 weeks is 10 months! So week 37 is 9m1w and 38 9m2w and ECT! @danamarie

I guess you have to figure months aren't exactly 4 weeks long so (look at April +2 days, March +3) so you need to bump it up so that 13 weeks is the 1st trimester otherwise you'd be pregnant for longer than 9 months...

TRIMESTER 1

Month 1: 1-4weeks

Month 2: 5-8weeks

Month 3: 9-12weeks

TRIMESTER 2

Month 4: 13-16weeks

Month 5: 17-20weeks

Month 6: 21-24weeks

Month 7: 25-28weeks

TRIMESTER 3

Month 8: 29-32weeks

Months 9: 33-36weeks

Month 10: 37-40weeks

i just go off that pic its easy to remember

@scarlettnikol, yea!! It makes no since!!!

cause usually they say 1-4 weeks is month 1. 5-9 is month 2. and so on cause there are 4 weeks in a month. but everyone says different things

@scarlettnikol, this is so interesting. So I wander why my OB considers it weeks 1-12 in first trimester. And so does several of my apps! So strange!

@drewmarie, true. So that would mean 13 weeks in the first 2 tri and 14w in the 3rd. Hmmm. So weird!!!

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well I looked at other charts and they look just like this one too. even my doctor approved this one. you're prego for 40 weeks not 39

@drewmarie,

If you go by this chart. That saying month 1 is 4months long. Month 2 if 4 months long. And month 3 if 5 month long....

@drewmarie, it's so weird how everything is so completely different! You would think they would be the exact same no matter where you went!

I go by the charts