Just venting..

I really hate days like this.. I'm a SAHM, I can't work because my son is disabled and needs me full time. And I'm currently 18 weeks pregnant. My boyfriend is at work all the time (which I am grateful he does what he can for our family!) so I'm by myself about 90% of the time. I literally have no friends. My son can't walk or talk so I can't really "interact" with him. I feel like I'm going crazy. To be honest, I don't like having female friends because most of them just like being in drama, talking behind your back about you. My ex best friend was sexting my ex fiancé while we were together and she knew how depressed i got over him and then come to find out she's the one messing with him (well her and about 20 other females) but still. I was in a group chat and it made me feel so happy! But my sister joined and she started making fun of my depression and telling everyone my business of what I would tell her privately and I just got so hurt that I don't talk to her unless it's about the kids I just keep to myself. I just wish i had a friend i could go and talk to and feel safe with my business. I thought me and my step sister were cool- i JUST went and saw her newborn and we talked for over an hour then next thing I know she just removed me off Facebook? Like I didn't do anything to her so I don't understand. Anyway, I feel isolated and like I have no one to talk to and idk what to do.