After my periods ended, on the 9th day had intercourse and took ipill after 17 hours. Exactly after 10 days, I am experiencing brown discharge, very light bleeding with small clots, back cramps, left lower abdominal pain, sometimes right lower abdominal pain, and leg cramps. Basically got my period before 10 days before my next cycle. What does this mean? Is it implantation bleeding? Am I pregnant or am I not?