Sensation In lower back and kidney. Sir.

Sir, Iam suffering from heaviness and pressure in head sir since 2 months , gastric type pressure is coming from low back  to head sir. Unable to sit on hard substances like steel chairs and walking on hard roads like cement roads sir. Because iam continuously having gastric type sensation in lower back. Done mri for brain and spinal cord everything is normal. Done ugc abdomen and pelvis it is also normal sir. But Iam suffering severe head pressure and heaviness since 2 months. Unable to find out reason sir. Used antidepressants and clonazepam medication but there is no improvement in my condition sir. Unable to travel in bus because concussion is coming to head from pressure coming from lower back. Please help me how to overcome this problem sir.