I've used Nix and Rid, washed all my sheets, clothes, etc. I even put mayonaise on my hair for a good 5 hours. THE LICE WONT GO AWAY. I'm constantly trying to comb out the nits but barely find any, and half the time Im not even sure what I'm looking for. I can feel the lice crawling through my hair and it's driving me literally insane. I cant sleep and I just want to cry. Please help me