The stress and hormones of pregnancy and hard, and it sounds as if there is an issue within your relationship. Calm collected conversations are so hard when you feel betrayed, trust me I know. I am literally the worst. I will walk around the block and get an espresso drink, something I keep off limits, but doesn't have a negative effect on baby if only consumed in moderate amounts.
Baby first, maybe ask your midwife for meditation and more breathing techniques.
Watch out for smoking.
If she's a lesbian, she's not interested in your guy.
The only one who seems to be misbehaving here is your boyfriend -
I jus can't help but think they messing around
Before just throwing her and son out make sure they have a place to stay. What if you was in her shoes and she threw you out with no place to go and a baby.think first.