Nexaplan problems with period

So I got the implant done about 2 and a half weeks ago and started my period eight days ago and it's showing no signs of stopping my stomach keeps hurting loads I've had it before but never experienced a period with it and this time round it's been awful I'm scared it won't stop and that I'll have a constant period until I have it taken out. Has anyone else had this problem? I get it's only been eight days but the cramps have been awful 😑 and I don't wanna be stuck like this.