u/Beistargoat

Hey, does anybody know a solution/fix for headaches caused by Gastritis
I think my headaches are caused by Gastritis, not only that but i am constantly dizzy, lightheaded like I’m about to faint, anxious, nauseous, heart beating fast and i just can‘t think straight and focus.
I have been diagnosed with Gastritis around mid February and I am 18M.
I just can‘t deal with all of this anymore, any advice is appreciated.