Recently I've been really nauseas, haveing stomach aches for short periods of time during the days, i've had some weird back pains. I've also had random appetites where i'll be hungry liek really really hungry, and then ill just stop being hungry. Ive also been on a weird urination cycle, where ill really have to pee and then ill go to the bathroom and i won pee as much as i thought i needed too. I'm worried about what it might be because, my bf and I started having sex about a month ago right after my last period. We've had sex about maybe 3 or 4 times. We've used a condom everytime, but im still worried that i might be pregnant, orif there was anything else i could be coming down from. I guess it would help if you all knew neither of us have an STD because it was both of our first times.