I've been spotting recently until twice w/in the past few hours, i started bleeding very heavily. should i go to the er i've been spotting dark small amounts of blood for weeks. but w/in the past few hours, i've started bleeding heavily. but only for a mo

Yes, : Yes, it is important that you be medically evaluated for spotting. The fact that it has been persistent over time is concerning and you need an evaluation.

Heavy vaginal bldg ?: Spotting with clots for "weeks" may be due to polyps, fibroids or pregnancy outside the uterus. If pregnancy is possible, obtain a serum HCG test to be certain, but if negative, see your gyn for an exam and pelvic ultrasound.