"implanon (etonogestrel) has been replaced by nexplanon and i had mine inserted last friday. so far i feel fine, no feeling sick like i would have done changing pill, no bloated tummy, no spotting. everyone reacts different to medicines. i have tried over 15 types of contraceptive combined pills, a few mini pills and they all gave me bad migraines. my doctor has recommended nexplanon implant as it is not known yet to give migraines. i would rather gain a bit of spot bleeding than have the head pain."