Should I be worried?

Maddie

I recently started being sexually active with my boyfriend. However, I am 17 and a senior in high school so I’m a little paranoid. I am on birth control (Tri Femynor) and we used a condom, and he also pulled out before ejaculating. We also had sex on the second day of my last period. Is there any reason to be worried that I could be pregnant or am I just paranoid? I’ve been slightly queasy and gassy lately, and there have been VERY small bright red spots of blood when wiping. Am I just imagining these symptoms and overthinking?

Update: My queasiness may be due to a stomach bug going around? I also ended my period on Dec. 30th