Hi im 26 days late for my period i have a 28 day cycle and i had unprotected sex in may.The last period i had was on april 18 2010 i had a little spotting in may but im scared i might be pregnant. I have taken at least 4 pregnacy tests all say negative i was under stress in may i just want to know what might be going on and also i had a D&C in march could i be pregnant thank you.