vaginapagina | The pull-out not really method and fertility/PCOS question

Before anyone lectures me on this, I know that pulling out before the boy orgasms isn't an effective form of birth control, if it could be considered one at all, and is a stupid thing to do. Even though I know that, since I've started having sex when I was 15 I've been having unsafe (pull out method) sex. I'm turning 20 in a couple months. Since I've lost my virginity there has been literally only three months during which I wasn't having sex due to break-up downtimes. Otherwise it's been around everyday/every other day, and half the time being unsafe. I've never been pregnant before and (this is why I might get lectured) I don't want to be.
What I'm meaning to get at is, I'm wondering if maybe I have PCOS? There's other reasons why I think I might have it besides not having gotten pregnant from my stupidity yet.

My mind is made up that I don't ever want to birth a child. Maybe adopt one when I'm 30 or so but I'm very repulsed at the idea of becoming pregnant myself. Still, as much as I don't want kids, I find it slightly odd I haven't become unintentionally pregnant yet. (Please, please don't yell at me. I know I shouldn't be having unsafe sex if I don't want to suffer the consequences) Aside from that stuff, I also have darker/hairier than usual body hair problems- On my bum, legs, upper lip, tummy, all those embarrassing places. I had a blood test once when I was pretty sick and I found out that I have high levels of testosterone, so maybe that's it? Before I tried out birth control (which my body reacts horribly to) I often went two months at a time with no period, and it was overall very irregular. After the birth control experimentation I've been having my period semi-regularly but still skipping months every so often. I think that could be attributed to stress though. I'm also slightly overweight. I've never been able to do anything about it short of starving myself which I did do for awhile. One summer I rode my bike twenty miles everyday and ate only 800 calories. I'm 5'2 and started off at 145 pounds and made it down to 135. I have a really hard time losing weight and I'm pretty active, my bike is my only mode of transportation.

I can't afford a gynecologist unless I go begging my parents to pay for it which I don't want to have to do. I went to Planned Parenthood long ago but it was a bad experience and I'd rather not go back. Does anyone in the community have PCOS and could be maybe set me straight with information/their experience? I would be really grateful.