Bleeding again after 1 week of periods.

Hi , I had an inevitable abortion on 20th may. After taking MPT kit and then my bleeding stopped on 24th may . Then I had my USG in which it mentioned that everything cleared only some clear fluid is seen in canal so my gynecologist prescribed antibiotics for 5 days I completed course and waited for my first period cycle . Then on 11 june I had my first period it went for 5 days..after that as prescribed I done USG again in which doc told free fluid is seen in cul-de-sac and minimal collection in cervical canal as well as 1 follicular cyst in left ovary . So doc again started antibiotics for 14 days and for cyst she prescribed Ovral L pill . I taken 1 tablet and I suffered severe nausea and headache and uneasiness. So she stopped and that ..but now after stopping that medicine on 5th day I started bleeding again . So kindly suggest what is this ? Why I bleeding again after 1 week of periods. Thanks doc .