Yellow discharge?

So, I was a virgin and me (20) and my boyfriend (21) had sex for the first time 2 weeks ago. We used a condom, checked it afterwards, it was all okay. My period came 4 days after that but now I feel like something is a bit off. It's ovulation time and I'm getting this strange yellowish discharge, there is no pain, itchiness or anything like that. It's just the discharge. I'm starting to get scared and a little bit paranoid, I checked all possible reasons... pregnancy scares me most but since a condom was actually there and my period came, the chances are almost at a zero... I don't know why but I get irrationally frightened. Can anyone give me advice?