When does the second trimester start??

Question

Just turned 12 weeks today does the second trimester start at 13 weeks? Or 14 cause some don’t consider it till 14 weeks I will be 13 weeks next Wednesday I wanna be done with my first already 😩

Answer

The 1st day of 13 weeks is what all 3 of my OBs here say. 
Technically 9 months is only 36 weeks, but we are pregnant for 40 weeks (or supposed to be depending on medical things). So by weeks the second trimester is longer than 1st and 3rd. 1st being 0-12 weeks then 2nd being 13-27 weeks and 3rd being 28-40 weeks. So its 12 weeks, 14 weeks, 12 weeks. By months though its 0-3, 4-6, 7-9.
Some Obs are different and dont consider 2nd until 14 weeks though. So answers will vary. 😊

When does the second trimester start??

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