I had my period on sep 6th. My husband and myself had sex from 16 to 21... but for the on 20th my stomach was hard and bloated.. I had cramps for about 2 days.I felt tired for 3 days and I had back pain for 2-3 days.today I got my period... m trying to become pregnant for the past 3 months.please help me.Is there any problem with me ?