When I played i really didn't know that I could cure myself in the last quest of the companions so i missed it but now when i found out I want to cure it but i threw away all of the witches headsXO Is there any other way to do it because I can't find any Glenmorian Witches at the cave

Become a vampire, then cure vampirism if you don't wont to be a vampire.

I'm suggesting becoming a vampire lord through Dawnguard DLC since it will overtake werewolf. You can then cure the vampirism through the quest Rising at Dawn.