I’m so anxious

I’m 17 and had sex for the first time w my bf a few days ago. I’ve been on BC a month and a half (my doctor said it’ll work in 1-2 months) and we used a condom. He also pulled out and after we also checked the condom by filling it up with water and nothing leaked out. And the second time we had sex we blew air into the condom and no air came out so I’m assuming everything’s good. It’s 3 days later and I had creamy white discharge in my underwear. Pregnant??? (My period starts in 6 days) I’m so nervoussssss