hello! please help me, 1st of September was my ovulation day we had sex with my husband for good 4 days on the 15th of September i woke up in the morning with a white watery discharge odorless i though its my period but when i checked its a lot of watery discharge, on 16th i woke up with a very dark brown discharges, on 17th i bleed and today just some few drops and it stopped and my period normally last 5 to 6days please am i pregnant?