I'm scared of relapse.. I need help..

I'm currently around 4 months clean, and up till now I was doing great, the occasional thought just passing through my mind, but recently I've had these urges. I just want to unscrew my sharpener blade and slice my skin. I really am scared. I really do not want to relapse. when I did selfharm it was the worst times of my life, and I don't want to go through that living hell again. I just need someone to talk to. I need to know that I won't relapse. I really really am scared.