Alone and judged

I'm sorry for being so negative but I need to let this out. I have no one to talk to. My doctor made me feel like shit for getting pregnant right after my miscarriage... then I find out my boyfriend is cheating... I feel so alone. I have no one to talk to about this. My doctor was so insensitive and didn't educate me beforehand to not try after the miscarriage. Idk what to do.