my last period was june 30, i am sexually active and do use condom and pull out method. in july 9 i had an on and off brown discharge till july 13. when i wipe i can see these brown disharge too. it is not foul smelling. thinking that i am about to get my period soon, and according to the calendar method as my safe period, we had unprotected sex on july 12, 16,17 and 24 and he withdrew all the time. my period is supposed to be due on july 17 but until now, aug 2, no period yet. i am worried. i am not yet ready to get pregnant.