I recently had a bumb on my pens it popped and leaked green like puss seen my doctor said it was a ingrown hair,now the hair has gone its left a hole?

Dilated hair follicl: An ingrown hair often leads to trapped sebum within the hair follicle, which then becomes inflamed, and sometimes infected (pustule). It sounds like your pustule ruptured, and the inflamed/infected material leaded out, leaving behind a dilated hair follicle, which looks like a hole. Keep area clean and dry and Use proper shaving techniques to prevent recurrence. Take care!