So I just finished my 3 years on implanon and got the nexplanon put in at the same appt. I've only had it for about 3 weeks but ever since, it's been this bad cramping in my stomach like my period wants to start but it never did. And the cramping was constant. Yesterday it got worse and I got nauseous and my sides got really tender, I would try to bend over to pick something up and it hurt really bad. Well I finally got my period last night. I never felt this way on implanon even though my doctor told me it's the same exact medicine. Anyone else on nexplanon feel like that sometimes?