I'm Falling Apart :(  

I've been holding this deep down inside for a very long time and can't anymore. I hope that who ever reads this has suggestions for me as I don't know what to do and this last week more than ever I feel like it's depression that's just eating me up inside.
I was sexually abused starting at the age of 9 by a family member, by 13 I was raped which led to promiscuity through out my highschool years. My immediatge family is the most wonderful family ever and we are very close but I never told them due to the embarassment I felt and thinking they would think the worst of me. from 13 through 16 I had many sexual partners and luckily I didn't catch any std's. When I think back at those times it seems like I was feeling lonely and insecure and I'm sure my actions were a result of the abuse that happened when I was just a little girl. From the age of 17-18 I was in a relationship that turned phisically abusive, as you see my life has been filled with pain. From the age of 18 on up things started looking much better, I kept myself busy with work and tried my best to change my life around, the pain didn't end there though and about a year ago I ended a three year relationship that was on and off. That relationship left me feeling used and broken hearted like I never had before. I became depressed, something I never felt before. I was depressed for 4 months straight, went from a size 8 to a 2 in about 3 weeks, my hair was falling and all I did was cry. It was the worst feeling in my life...imagine that anfter all I've been through. anyway, that was 2 years ago, I was so blinded that I gave the guy another chance thinking that I couldn't live without him. It was a huge mistake because just short after I realized that I stopped loving him when he broke my heart. it's been a year since then and I finally found the courage to be alone and take care of me. When I look back at my life...another thing I noticed is that I have never been able to be alone, I was always in a relationship that was abusive in one way or another so when this last one ended I decided to be by myself, that breakup made me much stronger than I ever was and it feels good...BUT...
I am 26, never was on birth control with any of my serious relationships (2 in the last 6 years), some times we used condoms but most of the time we didn't. it's been years and I have never been pregnant, now I'm starting to think I'm just not capable of getting pregnant (what else could go wrong in my life!). Since my last break up or in the last year I've had sex maybe three times with the same person and neither of those have been successful. Last night I couldn't sleep just thinking about that and it hurts so bad :(
My last period was two weeks ago and last week I started bleeding again, it started off brownish with a foul odor and now it's a bit more red, pretty light but I'm using light flow tampons. It's been a few days now and it doesn't go away!
In the last few years I've suffered from extreme pelvic pain in between periods and spotting at times. The last time I had pelvic pain it was so extreme that I was in bed unable to move for at least 24 hours. I don't have medical insurance so I decided to go to planned parenthood, unfortunatelly I had to wait weeks to finally get some attention. When there, they did a pregnancy test which came back negative then an ultrasound and the lady who did it said there was something in my uterus but she couldn't tell exactly what it was.. and that was it! I left even more scared from that place and without any answers. I lost my job because my company closed it's doors so I can't afford medical attention.
Today I am still bleeding, I feel pressure in my pelvic area and all that I've found out online through research is the possibilities of it being cancer, endometriosis or some cyst. and infertile because of whatever it could be. I'm so scared and I feel the depression coming back because of this and I seriously don't know what to do. PLEASE HELP! any suggestions will be appreciated. Sorry if my grammar is all weird but I can't even get that right because of the stress I'm going through and I'm typing this in between tears and sadness.