so last night my husband and a few friends were chilling out with us when he blacked out, fell down…

so last night my husband and a few friends were chilling out with us when he blacked out, fell down on a wood right on his head, and he started freaking out and about five minutes later he slowly was coming back to life almost as if he had a seizure and now he has a huge ass bruised looking knot on his head. he's been acting weird today I don't have my license but I really want him to go to the hospital to at least see if he had a concussion and today his dad didn't seem of any bit concerned about him. how can I convince him to go? like I've literally tried everything I'm scared to even walk out the room:(