Stopped birth control & period twice this month?

I recently started birth control "pill" on the 14th of this month june.i my last pill I took was on the 19th and that day I had unprotected sex.i didnt take monday and tuesdays pill but I took wednesdays.on thursday I started spotting brown.then it came like a normal period but not as heavy as usual how I get it.its not even dark blood its like light red and spotting inna way.i recently had my period on the 8th.so my questions are why did I get it again or is it spotting? Could this mean im pregnant? Please help.also this morning I woke up with my stomache really upset and wanted to throw up but aint it toooo early for mornink sicknes? Im freaked out!!!