help!

So I had pretty much a nervous breakdown the last two days. Like I had a rough week this week where I was like upset and crying every day. It isn't common. I am going through something. I found out bad news on on Monday. Well yesterday, I had a breakdown. Point of me on the ground crying, hyperventilating, etc. happened again today but worse. I am so upset now because I'm 20 weeks pregnant. I had bad cramping after that stopped now that I'm laying down and relaxed. I think I'm still feeling her while I'm laying down.  Should I call my doctor? I am so scared what all this stress may lead to. Is it possible it could? Sorry I can't even bring myself to say it.