How did you get over heartbreak?! Tips advice?

Im so sad. Been sad and depressed for about 3 months now. Not so sure how long I can continue feeling this way. It seems its going to last forever,though I know it wont.

Im pregnant, and Im worried being this sad, daily is not good for the baby.

The heartbreak im experiencing is extreme. It was the guy I was going to marry.

What can I do for myself,to start loving me?

I dont really have any girlfriends,wish I did now though.

Any help or positivity...send it my way! Thank you