I have been on the pill (marvel on) last two months. My last period was two months ago and I skipped a section of inactive pills but now I started spotting a week ago briefly and it stopped. I figured I was safe as I have never missed a pill daily so we made love (without a condom) and finally, I had bleeding the next day but it's dark red discharge. I am not sure what is going on? Is there a chance of pregnancy? We made love on Wednesday so there is still chance for Plan B but I need to know if I should take it or not?