two week ago (august 20) i have sex my boyfriend said he feel that he release a drop or two inside me,,,after that he used condoms,,then after a week (august 27) we do it again but with protection ,,,,after our intercourse i experience a blood vaginal discharge for 3 days and it is not happen to me before ,,,and my last menstration hapened august 1 to august 5 ...is there any possibility that im pregnant,,,