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Hi mummies! I am so confused! Does the first trimester consist of 12 or 13 weeks? 😵 The app seems to indicate 13 weeks as first trimester but I was told it's 12 weeks 😵
I think 2nd trimester starts at week 14, so making week 13 the last week of 1st trimester.
For your reference. Found this in one of the old posts..