hi, i wanted to know if i could be pregnant, me and my partner have been trying to conceive, we had unprotected sex the whole week of ovulation, and i have never in my life had a late period, i was meant to start on the 17th march 2009, i got little brown spots on the 20th, and now on the 21st i started my period, i had been getting the feeling like i was going to start about four days ago but i never get that feeling until the day i start, what are the chances i could be pregnant, i have been feeling very tired, headaches, quite allot of nausea, cramps, and severe lower back pain in the night, i have heard some woman get there period while pregnant but what are the chances,

Ill be very grateful if someone could get back to me with similar experience.

Thank you xxxx