Is 12 weeks in the second trimester? My glow app says it is... I thought it was start of 13

13 weeks starts your sexound trimester.

12 weeks would be right 3 months

That's crazy. Idk why my glow app says 12 then. Weird

What does your doc say? That is what matters. Every doc is different. I say 13w3d because 40w / 3 trimesters = 13.3

13 weeks is the start of your second trimester

My OB told me that they go by 14 weeks.

Everyone measures differently. I would say your 12th week is the last week in your second trimester. But some charts say 14 weeks.

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when does second trimester start?

Ashley • Sat, Jan 21

Is 12 weeks in the second trimester? My <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says it is... I thought it was start of 13

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