Pregnant or paranoid?

So I had sex on January 3rd, we used a condom and nothing went wrong. A week later I started my period, and it was heavy as usual. Now on February 11 I started my period on time, but it’s a little lighter than normal. I just learned that some people have periods while they are pregnant so now I find myself paranoid😅 I’m super tired but I think it’s just from school and stress. I’m not sure if I’m finding symptoms myself or I actually need to worry? I’ve been sexually active since December, but it’s always been with a condom and no mistakes that I can think of. I’m just worried because this period feels a little different than I’m used to, I feel bloated but I could just be paranoid and stressed?