My dad didn't yell at me or anything, just lots of different stuff. He used to throw cockroaches at my sister and me. And he slept around on my mom. He also used to masturbate when I was sitting on his lap as a little girl. I didn't know what was going on then, but i'm 18 now, and I remember stuff. Don't worry, I used to be like you. I think I just started at a younger age. Now, I use humor as a deflector, and I still have problems with bottling up my feelings which has lead to medical problems. The only real advice that I have for you, and I hope it's helpful, but you need to be brave. I know it seems like your in a bottomless pitt right now, but i've escaped, and so will you! I know it sounds corny, but time does help. Go out with a group, even if you don't feel comfortable! Eventually, you'll be a new person. If you ever want to talk, e-mial me!
Good luck!