I came off the pill last month had my withdraw bleed for 7 days was like a usual period. I came off on the 4th May 2015 and had unprotected sex on the 6th of May and 17th May 2015. On the 19th I had a slight pink colour when I wiped only once then the next day it was heavier like a normal period only lasted 2-3 yours. My AF is due tomorrow I have taken a pregnancy test this morning a faint line came up but dissappear in seconds could I be pregnant don't want to get my hopes up.....Please help