TTC with no luck and no period

Let's start from the beginning, I got my period for the first time when I was about 14, It was not regular. To regulate it they put me on *good god if I can remember the brand* birth control pills. I forgot to take them a lot so the doctor suggested I use depo.
I was never regular with the depo. I would get my period sometimes, not at all, and at one point for 6 months straight, every day. The doctors at the office I went to said that this should be normal.
Well after being on that for several years *I am now coming up on my 21st birthday* I decided in November of last year that I wanted to think about concieving, as it takes a little while to adjust and I was still thinking about it, I decided to take yaz for a short time.
The yaz made me very sick to my stomach so I decided in January that I wanted to ttc and stopped taking it. During the time I  took that I was completely regular, as well as for several months after.
In April I received my period 5 days late, then in May I received it the same 5 days late. I considered that maybe with the stress in my current situation as I lost my job that I could have just missed it and it was normal again.
In June I received my period 12 days after that 5, so technically 17 days late.
In July I did not receive my period at all, it is now November and I have yet to receive it from July,.
I went to a doctor after taking 3 negative pregnancy tests in Aug. and they told me that everything looked fine I just may not be ovulating. They advised me to see an OBGYN. Well, I do not have employment and do not have insurance. I have had some abdominal pain that I think may be cysts forming and popping *this runs in my family*, I have also had an over abundant amount of discharge and some days it is milky and some days it is chunky.
I tested again recently with another negative result :(
Could anyone give me some advice as to what my next step should be, please don't suggest anything to do with seeing a specialist unless you can help me with a way around the insurance part of it because as I don't have a job there isn't a load of spare change and I would have to save to go and see a doctor, I'm not thoroughly concerned with conceiving right now (it would be lovely, but..) as I need to find work before hand, but I am concerned about my health and the fact that I could have damaged something by being on the depo for so long and not have the ability to have children.
thank you so much,
Alex