I slipped backwards and hit my head hard on a curb and am still worried?

i would recommend that you tell your concerns to your doctor. especially after what happened with natasha richardson, it was all over the news, u can look her up, basically she hit her head and was acting fine the whole day but died a few days later. she did not have any symptoms that something was wrong, but she had swelling in the brain. i dont mean to scare you, but if its been more than a month after u hit ur head and ur still fine, then i dont think you need to worry.