It's very difficult to establish whether or not you have conceived if you have irregular mensis. I would suggest you take a HPT (home pregnancy test) to confirm whether or not you might be pregnant.

I am, however more concerned about why your body is not regulating your menstrual cycle as well as the discomfort you experience pertaining to your ovaries. You should, and I highly recommend this, see your obgyn for a pap smear and full check up, including sonar (ultra sound). Due to your irregularity, you run the risk of endometriosis and cervical cancer. This might also be the reason you are unable (if you test negative) to become pregnant.

Best of luck and my God bless you

xxx

I don't know what quite a few of your symptoms makes sense all meshed together. Having unproyeccted sex you sound so proud of it. Why go through all of a pregnency alone and not adopt the baby out, have you thought of that as I'm sure at your age you know you cannot support a child and boyfriend. Pretty irrespnisble to talk of premarital sex on here where people/kids watch what you write.