Suggest Remedy For Continuous Bleeding With Lower Abdominal Pain

hi... im 33 yrs old ,had my last periods on 30th jan2014....this mnth having some issue with my periods i started spotting on 19th of feb,it last for 6 days nd then had it in flow frm 25th feb ,its now my 8th day today but my periods r not over yet..along with severe weakness nd lower abdominal pain .....i had my pregnancy test done it was negative i had 1 abortion b4 and also history of having normal periods in the 1st mnth of my pregnancy my ultra sound showed that i ve polycyst ovaries ,i never had peroids this much long before.... it usually last 5 days previously and they were always on time almost....so is it safe to take any medicine to stop this flow with no side effects...as im also trying 2 conceive and also lactating my 14 mnths baby???