hi can anyone help, ive been on the pill after having my son 5 yrs ago, but the past couple of months ive missed a few pills, i had to go on antibiotics 2 weeks after the 1st day of my period, i had unprotected sex, about 5 days later i had a bleed which lasted about a day or so which i thought i started my period very early as i missed about 4 pills then had antibiotics, but it only lasted about a day, i was then due last week but all i got was a light brown discharge which lasted a few days, now im not getting anything, can anyone advice me please.