Bleeding for every 15 days since 2months

Is it normal to get period for every 15 days after surgical abortion. I got surgical abortion 2 months ago at 6 weeks of pregnancy from then I am bleeding for every 2 weeks and the bleeding continues for 10 to 12 days.There is no clots and not a heavy bleeding it is like a regular period flow and ultrasound also done to check for incomplete abortion, no remaining particals are found. During early pregnancy scan at 6 weeks of pregnancy a cervical fibroid was found measuring 12*9mm.but before my pregnancy I used to have regular period cycles for every 28 to 30 days normal bleeding and it is for 5 to 6 days but after surgical abortion I started bleeding after 16 days of procedure.doctor said it is due to fibroid. Form then I am bleeding for every 15 days on 2nd time I thought it was my period because I have some period symptoms before I used have. But I bleeded for 10 days after 10 of the stopped prolonged bleeding I am experiencing period symptoms again like leg cramps, stomach,back pain