My last period started on the 14 of last month. Ive had unprotected sex about a week after my period and then maybe 3-4 times during my fertile period and then on my ovulation day. I'm supposed to start my period in about six days. My stomach has been feeling weird for the past 2 or 3 days and I've been really moody and now I'm constipated. Could I be pregnant? Is or too early to show signs?