I ended my period July 31 and my fertile week started Friday. I had unprotected sex 1-2 times a day from the 3rd until Yesterday. I've only been on my fertile week for three days. Today I woke up because I was so sick to my stomach and almost couldn't get back to sleep. I did but then I woke up again needing to be sick. I fell back to sleep and now that I'm up I'm still feeling slightly sick but something bad. Could I be pregnant from the sex two weeks before my fertile week?