I need BC help!

I had my baby almost 4 months ago and at my six weeks check up I was prescribed the pill. Since I've been on it I've forgotten to take it twice 🙈 sometimes I get sidetracked and just forget. I've thought about getting the arm implant but I don't want something that's going to effect my fertility or cause me to not have periods.

Has anyone tried the arm implant? If so what was your experiences and if you've had a baby after being on it, then how long did it take you to get pregnant?

TIA 😊