Hi, I Am 33. I Have 3 Kid And Had

hi, i am 33. i have 3 kid and had 1 miscarriage thru D&C. for last 3-4 months i am suffering from anemia and my Hb is not rising above 8.5. I had my last periods on 23 April. i got worried this month and day before my urine strip test came positive for pregnancy. i already have 3 C sections plus in my last one my uterus was too adherent. My gynacologist asked me to abort and i also want that. she asked me to take cytotec one tablet orally every 12 hrs for five days. by now i've taken 4 tablets. i only passed a small clot after taking the first dose. no bleeding after that at all. i did my urine strip test in the morning and it is still positive. i also got a scan from gynacologist and it showed nothing in uterus. i am worried. should i increase the dosage or what?