Suggest Treatment For Back Pain And Swallowing Difficulty

Hi, my name is Miralani, I have a problem eating, when I try to swallow something it gets stuck in my esophagus and makes me throw it back up, I get very little food in my stomach, I am tired all the time and have pain across my upper back to shoulders. I also get leg pain and cramps. This has been going on for about two to three years but getting worse as time goes by. I have seen a dr about this and they just say I need to drink water and gave me Prilosec. I am 18 and since my father retired I have no medical insurance to see a dr any longer, I don't know what to do because where before I would maybe just throw up my first bite of food and was able to eat the rest of a meal, now I throw up almost everytime I take a bite.