Had sex jan 11 and there was high risk of pregnancy (22%) and got somewhat of a period a week earlier than i would normally get it. (Jan25-28th) The period only lasted 3-4 days when my period is always 7 days. Then i had unprotected sex feb 8 and still havent gotten my period. (Cycle day 36) took a pregnancy test twice (feb 8 & feb 20) and both came bak neg! Going to the doctor this week! IMPUT PLEASE?!!