nervous

I got my period this month on the 10th through the 14th, very usual. But I bleed on the 20th to the 22nd. I have had adnoal discharge and beenichty down there. I'm pretty sure I got a vagina bacteria infection. But I'm nervous about my period happening twice in a month but only for a couple of other days. I've also been nauseous, weak, moody, bad cramps, sore boobs, and headaches. My whole body aches pretty much. I don't know if it's from this, but a few weekends ago or last weekend I had sex with my boyfriend and he came in me. We used plan b but idk I'm nervous. I've also been sleep deprived because I simply can't sleep or I've slept the whole day away. Idk what I'm trying to ask but if anyone had insight or advice of anything that would be nice.