I had sex near the end of August the night before my period started, my boyfriend said he checked the condom (by filling it with water) and said t was not broken. My period started the next day on an average cycle. Two weeks ago we had sex again, again the condom was fine. 10 days before my period started I missed two birth control pills and then I had some brown discharge for two days followed by what I hope is a period.. I feel like my stomach is getting bigger though and I'm only 16.. what do I do..? Could I be pregnant..?