Possible trigger- incompetent cervix

Hello. Sorry if this shouldn’t be here, i’m just very upset. My waters broke and i lost my boy at 15 weeks but the doctors could not find the reason. But i am sure this was due to IC because there was nothing wrong with him. I just have some questions for the ladies who have experienced this scary condition because i want to get pregnant soon but I’m nervous.

1. Is there any way for a doctor to conclude i have a weak cervix before i get pregnant again?

2. I know the rates of successful pregnancies are very high if treated early so i’ll do anything to make it to at least 32 weeks. Did you have to quit your job for bedrest?

3. Do progesterone shots affect you in some way? (Mood, appetite etc.)

4. Any input on this condition would mean a lot to me.

Wish you all happy pregnancies and healthy babies!