Pregnancy, vaginal infection, stress. Ladies help me?

I don't have a gyno. And my mother is no where near open with me or listening to me aabout my health needs. I been sexually active for about 2 yrs. 2 different sex. Partners 1st one ended , i was perfectly clean. Negative pregnancy test. 2nd bf... been dating for about 6 months now. Feb 2014. March 2014 i started getting a rash from my pad i was probably allergic to it. After that , every month from March-April i was always itching around my vagina, towards but butt 1 wk prior to my period. June & July no symptoms ( we boke up ) but i was spotting for 3 days after my period. Now August 2014. We got back together had oral sex. And it became irritated again 1 wk prior to period. Now it's sept my period is usually On the 19th of each month. No period, no itching, 2 negative pregnancy test. But i do feel like im gaining a lot of abnormal weight. It feels abnormal maybe because i haven't workout out much and it seriously feel the weight gaining. Overall. Im scared. I wanna get tested maybe he infected me with something. My last bf was clean saw his results from the doc. So I don't know what's good on. Im scared. I never in my life had a yeast infection or anything. I assume that's what i have because i have them symptoms. Im always clean i always clean myself daily android properly. I don't know If any female can give some advice please
Updates
+1 y
i Know Its Been itching the Last 4 months and i really can't do another month of it coming back. Maybe it's BV. Idk. But it's annoying. How much is a regular gyno check up? & i don't want them to stick anything inside me though. Imereally scared
Pregnancy, vaginal infection, stress. Ladies help me?
Post Opinion