Hi! I'm a 22 year old married woman. My husband and I are currently trying to have our first child. My last period started on Sept. 3rd and we had sex four times during my cycle. For the past week I've been noticeably sick to my stomach and nauseous and today I've had light cramping all day. My next period is due on Tuesday. I've NEVER had cramps BEFORE AF before in my life. Could this be implantation cramping??