i had two counts of unprotected sex on 3/20/08 and 3/21/08. i think i was already ovulating because on monday 3/24/08 it was the thinner cm meaning fertile. i was told that you can become pregnant anytime during ovulation. it was a sure shot of sperm two time in a row. Now i am feeling crampy and some lower back pain and my breasts are heavy ( not sore yet) and i've been more tired than normal, sleeping 9 hours and needing a nap during the day at least an hour nap. i am about 2 weeks away from my next period. i never feel symptoms till one week before. all my periods are 28 days , come like clock work. can anyone tell me what might be going on , could i be experiencing some very early symptoms ? and yesterday i did notice some brown staining on my p liner, just a little spot. i was having mild cramping yesterday. could i be pregnant , i hope so !