Alright, so one day last may after having a burger I got in the back seat of a friends car for my ride home. During the ride I became extremely car sick and spent the rest of the ride with my head out of the window, which had never happend before. From there on in I was constantl getting motion sickness, whether on the subway, driving a car, or being a passenger in a car. I also started to frequently get light headed and dizzy. The symptoms started to vanish but never went away. I still have an almost constant feeling of nausia that is severly hightend when I am under stress or have anxiety. I went to the doctor and he doagnosed me with acid reflux disease and prescribed 150mg apo-ranitidine, which, does nothing for me at all. It is now taking a serious toll on my social life seeing as how my subway rides to university every day are crippling, and I choose not to go do things with my friends for fear of getting nausia. Im just curious what I should consider doing as my next step? Any suggestions would be great

p.S. I also get dissy very quickly when standing up after sitting for abit, or if I get nervous, this has only started happening after the original stomache issue