The marina coil was removed 5 mths back & you have bleeding since then! you should have consulted a Gynac much before.
The cause of bleeding might be inflmmation of uterine inner lining, Hormonal
, an incompleate abortion-& many more
The need of the moment is to know exact cause of the bleeding &try to stop it with proper treatment.
I would advice to get your Blood Hb%,along CBC, Bleeding & clotting time.
Pelvic USG will clear the exact position at the moment.
You should take all the reports to your Dr. for evaluation & exact diagnosis.& manegment of the condition.
take rest,take plenty of fluids,nutritive diet.
& treatment advised by the expert.