Hello I have been off period for five days now and I had sex the day after my period and a few more times after in the past week, I have had tightening of the stomach, little pains in my stomach like cramps but I know it's not, I feel like I have no energy in me even when I get a good nights rest, i'm moody and I feel sick every now and then and i'm not worried but I need to know if I should take a pregnancy test or wait. My best friend said that if I have had sex within the seven days after my period I would become pregnant what should I do?