I am on birth control that I take regularly everyday. I ended up in immediate care for upper respiratory problem s where they gave me antibiotics that I found out can disrupt my birth control so I took plan b the first thing in the morning and it was on the same day I started my inactive pills. Im on day 5 of my inactive pills and I have not gotten my period yet. Is it from the plan b hormone s? Will I get my period this month? Will my cycle be messed up? Ive had cramps like im going to get my period but nothing yet. Please don't be rude. I know that there is quite a bit of hormones in that pill so I think I should be protected with that and the pills but im worried...