Okay I literally always freak myself out that I'm pregnant. My boyfriend and I always use condoms and fill the condom with water when we're done to double check for leaks (I know it's a little too much caution or whatever). I just ended my period 2 weeks ago. For the past week I've been having bad cramps at night. I also woke up with a slight cold yesterday and today. Today I feel nausea here and there and sometimes feel like throwing up. Now I scared myself into thinking I'm pregnant. Could I be ? I just need my nerves to calm down. Also we only had sex 1 time during my ovulation cycle (that I can remember anyway).