PLEASE HELP...really need advice

Basically:

I worked out about a month ago doing tricep activities and pushdowns...Ive been a heavy lifter for a while and have known that my wrists are not the strongest part of my body.  Needless to say, I have also been cracking my neck for about a decade for relief and twisting my back for years.  Additionally, I do have poor posture as I always sit cross-legged indian style when studying and hunch over...I have now changed that.  Lastly, I used to smoke for approx 4 years..and quit..as soon as my symptoms started

Symptoms:
2 days after working out (or perhaps working out may not be the cause) I started to notice a pain in both wrists...seemed to me it was probably from the workout.  A day after that I noticed heaviness in both forearms around the forearm flexors...and a slight twitch/shaking in my ring fingers...I got really scared and didnt know what to do. Concurrently, I had been taking graduate courses in neuroanatomy and pathophysiology..which didnt help as I thought I had multiple things including MS, UMN and LMN disease of some sort....anxiety of the UNKNOWN did not help...and I started developing fasciculations as well...which went all over my body..I am aware of BFS and my symptoms to some degree were consistent with that...which did help calm me down.  I went and spoke with my PCP who did a gross motor screen and neuroscreen and it didnt reveal anything remarkable.  I just started paying so much attention to myself, and everything that was under the radar seemed more perplexing now.  The MD prescribed me some Naproxen which I felt may have helped over the course of the first week, and discontinued it.  Though the heaviness in the forearms subsided...I noticed a decrease in my fine motor control...and tremor in fingers...expecially the ring and pinky fingers and thumb..The numbness is since back in my forearms and translates into heaviness in my fingers and hand..ALso, whenever I flare my fingers (like playing an imaginary piano) I notice that both pinky fingers sort of snap back unlike the others which remain fluid (both hands)...The pain in the wrists has also returned when I place them into extension.  I have also had some pains radiating from my low back into my legs, especially the knees...It should be however known that my knees have popped before while playing basketball and I have also torn both hamstrings in the past...but that was more than a decade ago.  The loss of fine motor control has made typing and writing difficult but not impossible.  My doctor said that the symptoms do not indicate that I need to get a head/neck MRI right now.  The heaviness and numbness...along with burning sensations which can be felt around the thumb (palmar area) often switch arms...that is, sometimes the symptoms are worse on the left and then sometimes worse on the right.  I feel like stretching my flexors of the forearms helps...but not so much as to reduce the symptoms bigtime.  I saw an orthopedic physical therapist who said that I may have hypermobility of the neck and some compression...I am scared to think that the cause is neurogenic...I dont have a family history of any neurogenic disorders...I am scheduled to see a neurologist on Monday,,,and am hoping that she will prescribe an MRI....It seems most that the anxiety associated with not knowing what is causing this...has really left me most depressed...I have trouble sleeping and focusing on school...It seems to me that because I am focusing so much on my symptoms continuously all the time, even subconciously probably..that I mis say words...like for example...I have caught myself switching letters around and vowels...like the word "pretty" came out as "pratty"...I know that I typically speak fast, but could that be indicative of something else.  My blood work came back normal...and though my b12 levels are 268 pg/ml (normal range being 200-1100pg/ml) I have started taking more b12 daily...but I have not seen any improvement.  I am a vegetarian, and always have been, but again all essential electrolytes came back normal.  CAN ANYONE PLEASE RECOMMEND SOMETHING? or has anyone suffered similar symptoms?  



Thanks..much for your time.