Hi.. I 've Been Having This Weird Wet Sensation In

hi.. i 've been having this weird wet sensation in my head.. whenever i run i feel like some liquid is moving in my head.. im currently seeing physical therapist for stiff neck which i got from a punch.. i had mri and ct scan done.. everything came normal.. but my eyes doesnt feel normal.. it feels like its burning..and the biggest problem im having r8 now is balance problem .. whenever i stand still or close my eyes.. i literaly leaning back and forth.. and the crunching sound in my head is also really bothering me. i dont know what to do here.. my local doctor told me focus in school at this point beacuse im only 17. yes the weird feeling my head is always there as i try not to run too much before it gets worser.. i would appreciate if you have any advice on my situation.. thank you :)