Towards the start of the year I had sex for the first time and nine days later I got my period which lasted for four days. After the fours days I had sex again and then again four days later. Late the month after I got my period again and it was pretty much the same flow as the month before. The sex was protected all times and I'm not on any birth control pills or whatever and since then I haven't gotten my period for nearly 6 months. Could I be pregnant? And if I was shouldn't I be showing?