when does second trimester start?

Question

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

Answer

Surprise! It's actually 14.

Answer

13 weeks starts your sexound trimester.

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12 weeks would be right 3 months

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

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

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13 weeks is the start of your second trimester

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My OB told me that they go by 14 weeks.

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

Let's Glow!