Hello and welcome to Healthcare Magic. Thanks for your query.
The failure rate for a contraceptive
implant is 0.05 %, which in fact is the lowest among all types of contraceptive methods and devices. The symptoms which you have described are non-specific symptoms and are not definitive indicators of pregnancy
. If you are in doubt, I would advise her to get a urine pregnancy test done, to rule out the possibility of pregnancy.
Dr. Sheeba Stephen