I'm really starting to fear whatever the problem is will never go away. And I'm still afraid there is something serious going on, that all the doctors I've seen have missed, almost 16 months later. People can be sick for years, without being diagnosed, and then just finally pass away and not find out what was really wrong until after you're gone

Anyway, so the current symptoms I'm faced with. I've had this weird feeling in my back for like 3 months now. It's right below my left shoulder blade area. It's like a gnawing, pulling sensation that comes and goes with no rhyme or reason, but it can last anywhere from an hour, to the majority of the day, 7 days a week. Almost daily, I will also get some type of all over back pain and burning...it is awful. I went to the doctor yesterday, and it was only my second time seeing this doctor, I'm not sure how I feel about him yet (he is my friend's doctor, and she highly recommended him, but he gives me weird vibes, so I don't know). Anyways, he said, for starters you shouldn't be slouching (I have horrible posture). And he said also my career could be wreaking havoc on my back. I'm a waitress and I carry trays with my left hand, and I'm also a cashier part time and stand on concrete floors all day. He said to try some IcyHot, and Aleve twice a day for 2 weeks. I will try the IcyHot, but I'm not comfortable with taking Aleve that frequently and for that long (I know what NSAID's can do - cause ulcers and what not)! He said if that doesn't help, we can try some therapy sessions...I'm guessing that means chiropractor, which I'm thinking about calling mine anyway (I started seeing one when i was pregnant, and he really helped me). I however am not sure he's correct on where all these sensations and pain is coming from. I mean, I've always done this type of work, and never had a problem. My back didn't bother me this much when I was pregnant!
Another symptom I'm having is this awful pressure in my head. It feels like someone has a vice around my head, but I don't have a headache, just pressure. It's a tight band right around the head right above my ears, but I constantly feel like I need to pop my ears too. I've had something slightly similar before that I was checked for an ear infection, and never had one. I also had 2 CT scans without contrast within the past year of my brain, all normal. So I should be relatively relieved to know nothing is wrong in my head, but the what if's start. What if they missed something? What if they couldn't see what they needed to without contrast? What if I need an MRI to find the problem?
I'm worried sick here. I don't know what's going on with my body, and I'm really getting tired of it. I wake up worrying every day, not knowing for sure what is going on with me.