Nervous

Hey guys! So I’m on the pill, I have been for about three or four months now. I’m 19 and I’m sexually active with my boyfriend. I take my pill when I wake up and that can range from 7am -1pm, but it’s a combination pill so I don’t have to worry about what time i take it. Anyways, a few week ago I forgot to take my pill that morning and I ended up remembering right before I went to bed around midnight. So over the next couple days I get back on my regular pill schedule, but I start to bleed. I had never missed a pill before so I was a little worried. But I just assumed I got a mini period. So a couple days later i have sex, without a condom, but he pulls out. Now it’s a few weeks later and on my placebo week I don’t get a period. I’m a little worried about it, but I’m hoping that I just messed up my cycle by missing that one pill. What do you guys think??