Bleeding after abortion. For that?

I had an medical abortion at 5 weeks 25 days ago. There was normal bleeding with clots and the bleeding and pain decreased gradually and finally stopped 7 days ago. But the next day it again started and since then there is continuous bleeding with periods like pain, only difference is that now intensity of bleeding and pain keeps on increasing and decreasing time to time. sometimes it's like it will stop but after few hours it again increases like first day period. I don't want to have Ultrasound. Should I wait till my due date of next periods or should I take any medicine for that? Very few small clots are passing while bleeding. I don't have fever and the pain is like periods. Please I want to avoid ultrasound. Please suggest me.