Could my serious mental problems originated from parents' divorce and depression of missing someone?

I think I have bipolar, anxiety, social anxiety, ocd, depression, paranoia and maybe schizophrenia.
When I was 10, I cried so much, missing my grandma who lives with me and went somewhere else. She was getting surgery for cancer, but I didn't know about this until she came back. She went back and forth in some intervals and I cried a lot. My parents got divorced and long before I started to live with my grandparents who are better than parents. I also was tremendously scared and sad when my mom took me to the bathroom and locked the door and hit me with a small pot or something. She hit me a lot. She hit me when I wet my pants when I was like 3 or 4 and I would have to wash the floor. I was very struck when she cut my barbie's hair, which I cared and loved so much and it was irreversible. My grandma pushed me to the bed when my mom was going to drop me from the top of her hands because I was crying at night when I was a month or a few days old.

I was bullied when I was in grade 1,6 and 7. I was very lonely throughout high school. I would have to say that my elementary years were hell and I would never want to think about it, at least that was what I thought after I graduated from grade school.

When we go through many traumatic things in life at a young age, it does have an affect on us. But, I would caution you about that huge list of disorders and problems. Stop that and start fresh from today. Work on your issues on how you can cope better now. See my post on CBT.

Dwelling too much on what happened does not let you move on and have a present or future.