Okay y'all, when does the 2nd trimester actually start?!? I'm 13 weeks today and 2 apps say today's the start of my second trimester but 2 say I'm still in my first?
So my OB. Considers week 13-26 the 2nd trimester. But I keep reading all this crap online about week 14 starting the 2nd trimester. What does everyone else's doctors say!?! Also. Half of my apps say I'm in the 2nd trimester. The other still say first trimester!

My sweet baby girl gained her angel wings this morning. She was my best friend, my true love my everything. She was so happy and beautiful, I'm struggling to say good bye. Sleep tight princess, mummy and daddy love you very very much ❤️

Ladies I'm getting so confused my doctors says I'm having a girl .... But everybody else saying it looks like a boy so I'm wondering 😪 it your having a girl would it look like this ?
Please help!
My doctor is trying to induce me before 40 weeks because she's going to be off on my due date and says my placenta is starting to look old. How do I get labor started?? I don't want to be induced for no reason and I'm thinking I won't have a choice. Please help. What do I do to get things going?

Why this pregnancy app say I'm in my third trimester :-/
14 weeks.