the real question since you have removed the implanon is whether you are getting your menstrual cycle. if not you are not ovulating at this point in time. it may take you longer. rheumatoid arthritis itself should not affect one's ability to conceive however you did not mention the medication you are currently taking. most medications for ra don't cause problems unless you require chemotherapeutic agents. if you are concerned i would recommend you contact your physician to discuss further.
can ra medications like implanon affect my ability to get pregnant?