Pregnant Or Period

ok, i totally stuffed up my pill and didnt take a few before and after my period. I started to bleed so i went off the pill and had my period which was a week early. Then 2 weeks later i had brown blood for 2 days and then it went away. But now theres a tiny amount of blood again but my period isnt due for another week and i dont no if im pregnant or i just stuffed up my cycle. Please help