The reason why your periods are jacked up is beacuse, like you said, you stopped taking your birthcontrol.
Doing this can affect a woman in many many ways.
The itching your talking about may be from not peeing or cleaning yourself up after sex.
Did you have anal sex and then proceed to have vaginal sex?? This could cause .Thrush, which is generalized as the symptoms that you are describing.
3 months ain't sh't girl. 3 months isn't even enough time to establish a good relationship with his family.
Do you know his last name??
I wouldn't waste your time/money on anymore tests. Just go to your ob/gyn and tell them you stopped birthcontrol (you know as well as I do that they're going to be pissed)
does your boyfriend know you stopped taking your birthcontrol? I bet if he knew he wouldn't be coming inside of you. I'd be willing to bet money on it..
Sarah