i don't know what's wrong with me- 2 year search

[Jenniferr1987]

Please help.  I have been sick for two years. I'm 22 years old.  I have heterogeneous echotexture on my thyroid gland and normal T3, T4 and TSH readings (TSH: 3.77). I had low Vitamin D, which is now resolved by a 2000IU supplement, daily (PSH was normal: 2.7).  I have menstrual spotting, a week after the end of each period.  I have gained weight rapidly (20 pounds in the past 2 months).  I have a lot of intense back pain, mostly in my neck, but also everywhere else.  My knees hurt, my fingers hurt, and when I stand up in the morning my feet feel very very tender and sensitive (though they don't look swollen).  I had sciatica last year.  I have moderate psoriasis and my rheumatologist ruled out psoriatic arthritis ("nonspecific" patches of spinal inflammation + degenerative disc disease; no rheumatoid factor, and no genetic marker for psoriasis either..???).  I use to take desonide and betamethasone for the skin, but got switched over to dovonex in the summertime.  I have daily nausea and vomit occasionally because of it.  Last week, I threw up because of standing up too fast.  I'm very lightheaded and occasionally get a numb feeling at the top of my head, my cheeks and my tongue.  This morning, I ate toast and drank a half cup of coffee before going to class and I had to leave half way through because I was seeing spots, had severe, PIERCING stomach pain and my heart was RACING.  I was tested for celiac disease (I use to be incredibly thin, with the same stomach pains), and the results were negative + no malabsorption problems.  Vitamin levels are fine.  I had allergy testing and I have chronic urticaria (seasonal), but no food allergies.  
I'm worried.  I feel terribly sick and none of my doctors are listening to me.  I could really use some advice.
I'm also waiting for an x ray of an enlarged lymph node.  My doctor explained to me that it's unusual because there is nothing inside of the lymph node (i assume, no nucleus?).  They found it when I was getting my ultrasound of the thyroid gland and a fine needle aspiration (they thought it was a nodule and it's not cancerous)................Thanks for reading.

[2010adam]

if your having pain in your neck/back/knee you should request a CT scan/with contrast for all 3 if your dr. asks why say as a pre-caution you want to rule out a slipped discs or any spinal stenosis etc. again if he says why? tell him you played sports etc in HS etc. etc. Then you should get a refferal to pain management and see if you can get either cortisone shot or trigger point injections etc. It appears your highly sensetive to meds, some people have severe reacation to meds that they dont even know they are allergic to, if you can get all this testing done on your insurance get it done!
maybe you should see a allergist as well. what is your potassium level? low potassium can be a cause of aches and pains etc.

[Jenniferr1987]

what does a ct scan do that an mri doesn't?
i've had an mri of my lower back and x rays of my neck. lower back= "nonspecific patches", neck= degenerative disc disease and reversal of normal lordosis.  The pain didn't come with an injury/event. It started off mild and got worse and worse.  My rheumatologist took me off of meloxicam (and consequently rabeprazol) when he got those results, so i doubt he'd send me to get cortisone shots. actually, meloxicam wasn't helping in any way. currently, i'm only taking a variety of vitamins and otc pain relievers, so i don't think i'm highly sensitive. i've seen an allergist, and have seasonal allergies, but no other major ones. potassium levels are fine, but i'm incredibly fatigued.

i don't know what the meaning of this suspicious lymph node is, but i get sharp pains in the area every now and then.