Someone please just help me calm down

I just recently found out I’m pregnant. I lost my baby months ago. And i was so excited and now my boyfriend is screaming at me literally laying on the floor crying saying he should have left me before this happened he didn’t want this he doesn’t want a baby with me I should have done this with someone else and a lot of other mean stuff. I can’t stop crying and Im scared I’m gonna be so stressed out and miscarry again. I just need help calming down. I feel so alone right now.