Help I have had my period for 10 days!!

Hi my name is Deborah am 25 and I have to children girl 7 and boy 4. My husband and I got pregnant in December but sadly I had a miscarriage at 10 weeks February 9, 2015 I will never for get that day I took it really had and to this day am still grieving a little. But that's not it I had a incomplete misscarage and I didn't want to do a d&c so I told the dr to do the pills there like abortion tablets that go vaginal. OK everything went fine. never what to go threw that again in my life. I got my period march 11. My period last 3 day and it got my period again April 1 and I still have my period it has lasted 10 day I am haveing heavy bleeding with clots and no I wasn't pregnant senses the miscarriage my husband and I have been haveing protected sex and I took a pregnancy test on the 31st of march and it came out negative but I am worried this is not normal for me Idk if I am like bleeding out or something?