i had an abortion jan.14,2011.. i bleed alittle. then 10 days after the abortion i started my birth control .(4 pds a yr).. I started 2 bleed heavy lots of blood clots. i went to the er n they said everything look fine.. i had a drs appt a few days later and they took a pg test and it came out negative..so i figured the b.c is what cause me to bleed a lot. so i stoped takin it and i havent had a period yet sometime when i wipe its pink but no bleeding .. what could be wrong?