Hi. Am 21 yrs old. And i'm having tummy problems. I dont know if its cause of the sex. I had sex 4 days after my period. Which last about 5 days. Today is the 18th day since i had sex. And im feeling a bit weird. After sex. I got constipated for a while. And idk if i still am but i'm eating fiber foods and drinking lots of water.. i heard that constipation can make u feel nausated. But i had sex. And idk if that can be the cause as well. I'm scared. Please help. My period is suppose to come in the next 4-6 days from this post.