ok so i had sex unprotected about 2 months ago. i was put on bladder infection medication about a 2 weeks later. the first medication didnt work so i had to go back 3 days later and be put on the medication for 7 days. while on that medication i missed 2 days on my packed of birthcontrol and i ended on a tuesday instead of a sunday. i missed my last period and have had sore breasts and have had no signs of my period ever happening and have had no blood since. i normally have a period on the last few days of every month or the first 2 or 3 days of a month. i know i didnt miss count on my pill cause its set up to end on the same day of the week every time no matter how many days in a month. should i be worried or could it be just a effect of my medication the doctor put me on?