Very young, sometimes jump out of my sleep, Head pressure

Hello, I am very young, 18 and have been experiencing extreme head pressure. But here is the thing, I was a marijuana smoker for a good 2 years, (Yes, I know I am wrong and have quit so please don't bash my faults because I would just like to know that I am okay) One day I had smoked and started having anxiety attacks, heavy head pressure, difficulting swallowing, tingling in my arms, weird spasms, just all the symptoms of anxiety. I stopped smoking and I began having anxiety including constant weird pressure in the back of my mind. I was prescribed Xanax and muscle tension meds to help which I will admit did help me quite a bit. As long as I don't think about the anxiety and pressure in my head I am fine, except for problem is I cannot help BUT to think about it taking over my life. So I believe that it was all triggered by marijuana, which I have vowed to quit and I am doing fine without it and don't plan on starting back. Through out my days now I am doing much better but sometimes I have tingly feeling in my head that shoots through my body, vision feels a little blurry but not serious, tension in my neck and lower head area sometimes, but the main thing is the pressure in my head every once in a while that is just scary. The doctor has told me it is just from stress, and even though meds to help me most of the time I just need to some reassurance that I am not, this sounds crazy but, dying. I am very young and in a whole different state than my family trying to support myself and get an education so stress is something that could possibly be causing this. And do not have the ability to just take myself to a doctor to run tests if possible because of being on my own. But only when I think about it the tingly sometimes numb sometimes tension feeling on the back of my head, jaw line, face does mess with me and psych me out. I would just like some info on what anyone thinks this may be or could be, or someone who has experienced the same thing. OH as well as when sleeping, I sometimes jump out of my sleep which causes more anxiety to take over causing it difficult to sleep. So please, the weird pressures in my neck head and sometimes behind my eyes (I forgot to mention) is uncomfortable. I just need some comfort or answers because I begin school soon and this has just really taken a toll on my every day life. Im not sure if maybe this is hereditary or what it may be, I was taken from my mother at birth who was addicted to drugs and my father is unknown. Im just very confused and scared right now. Even as of right now I have almost a tight tension on the left side of the lower part of my head, top of my neck, and a pressure in my head that is freaking me out. Xanax does help me but it is not something I want to become addicted to. PLEASE someone help me.