I am on birth control and hadn't missed a day. I took the pill about two hours later that day (I take it 8 to 8:30 AM every day), but like I said, hadn't missed a day. We had sex without a condom, and he pulled out a few times to cool off, then he pulled out and I helped him finish. But I've been on the no hormone pill for three days now and no period. And I had brown discharge this afternoon. Could I be pregnant?