extreme itching after shaving

Does anyone else get this? It's not razor burn it's the damn hairs growing back, it's like metal growing out of my skin. My pubic hair is thick and black and I rarely shave it because of this, I just trim it. I got tired of looking at the hair so I just took my razor to it and now it's growing back and itching so bad that I want to die. I've been itching when I sleep and I have itched the area between my crotch and thigh raw.