Numb 😒

So I am an chronic maturbator and I do it anywhere from 5-8 times a day. No it’s not because I’m lonely I have an amazing man and we have great sex but it never gives me an orgasm like I can give myself. Day by day it’s becoming harder and harder to cum like today and WHOLE hour 😱 And that’s never happened. And I’m using an clitoris vibrator. 😔 My clit is numb now and I don’t Whats up??? Please help am I doing too much? Do I need to take a few days off ...lol. But seriously is there a such thing as too stimulation??😳