Is Bi Polar Hereditary? Can it be caused from years of Mental Abuse.?

I was abused mentally and verbally by my mother. She hated us 6 kids so bad. She told me when I was 7 she wished I was dead. That she hated me to my face. She ran around on my dad and got caught pregnant with me. She tried to abort me and it did not work. She then refused to take care of me. I got spinal menengitus at 2 months 10 days old. and I was hospitalized for 13 days in Intensive care. She told me all my life that it was bad when I could not even get DYING RIGHT. I mean I heard this all my life. She made me get married at 16 just to get me out of her life. He was also abusive and demanding. After 2 years 11 months I was 19 almost 20 by this time I told him I was tired of his abuse and left him. I was staying with my parents until we could get our divorce. My mother was so Cruel She bought me a bus ticket and sent me 2500 miles to be with him in the Army in Georgia. I told her we were seperated and she said Tuff Crap. It was his place to take care of me. So I got there and he was FURIOUS. Because My mother sent me to him. I got there March 20 and by April 6 he had left me. I called Mom to get back to Illinois ahe told me Hell NO get a JOB, Sink or Die she did not give a **** But I WAS NOT coming back home. Now I call this abuse. But anyway I found a man who needed a house keeper. I stayed with him and cleaned his trailer, cooked his meals, and took care of things for him. And then He asked me to marry him I agreed then I also found out after all this he was married BUt she had lefthim only 2 months after he married her. So I called back to my mothers and told her I would not be coming back to Illinois. I found a place to stay.Things were fine for me. Then in December 1981 he got out of the Army and we came to Arkansas. And his mother is even worse then my mom was with the abuse and the degrading and name calling. In1989 my dad died from Cancer,In 1990 my oldest sister and her Kid moved in on us. And then in 1991 my mother moved to Arkansas and the abuse stared all over. And I told her enough if she wanted to abuse me I was strong enough now I would just turn her in I knew what abuse was now and Would not tolerate it any longer. Thankfully she got sick in 1994 and she died in 1996. But by this time I was diagnosed with Clinical Depression and Anxiety. I was put on meds for it they worked great. Then my husband decided that He was not paying for the medication and Quit his job so we lost our insurance. And so there went my meds. Now I go from HIGH HIGH to low low I have some good days and Alot of bad days. Day I just want to sllep all day. But if I want to go to the Doctor he spend all his money so I can't go.We just filed Bankruptcy in December 2009 and now he refuses to let me go to the doctor because he will not let me make any bills. But yet he is paying for a washer for our sons family who they both work. And he just paid off a riding lawn mower that he paid on for 3 1/2 years. But I can't see a doctor.