I am 26 years old and had an abortion on April 6, 2011. Everything went fine and my follow up appointment was fine. I started my period on May 9th that lasted about a week, now it's June 27th and I still have not got my period. I have taken 2 pregnancy tests in the last 2 weeks which both came out negative, but I have had unprotected sex using the pull out method, is there any way I could be pregnant and it's just not showing on the pregnancy test yet?