I had implanon inserted about 6-8 weeks after ds was born. I bled for 8-9 months straight barr a couple of days here & there. Sometimes it would be heavier than others, but it was constant. I also gained weight & developed some serious mood swings. Needless to say i did have it taken out after 9 months. My Dr told me when she put it in that there was a chance of bleeding for up to 3-6 months for some ppl.
If u can stick it out for that long with the bleeding & hope that it stops after a few months then keep it in. I would be asking about other forms of contraceptions if i were u tho. Maybe ask about mirena. It last for 5 years. I was supposed to get that one about a week ago but changed my mind coz ive been reading some stuff on here about it that other ladies have said.