Am i experiencing GAD/OCD?

The past 5 months have been the wildest/worst in my entire life.

It all started with a caffeine powder addiction i developed over the course of a year. Everything fell apart on june 22nd 2015. I found myself literally jumping out of bed and almost running around the block because of a unexpalined "energy" i felt in my solar plex. A doctors vistit and blood work the next day revelaved that i might have acid reflux and very light blood in urine and definitely had a low EGFR of 75 (which is very low for a 25 year old). I spent the next 2 months with intense random chest pain, thinking i had stage 2 kidney disease and random anxiety attacks and bolting up randomly at night, verigo while sleeping and jolts. Through it all i still exercised and kept on studying and did not take pain killers. however on august 29th i caved and finally went to the er because of the chest pain. Yea they did not take me seriously and sent me home. A echo of the heart and sonogram of a kidneys showed no damage at all.

Strange enough, the chest pain started going away and i started to eat more protein. Then...suddently i stated having obessive thoughts and random fears. Then when i was able to control that i experienced derealization for about 3 weeks and depresseion about 2 days. this was the worst ever. It got so bad i did not want to live. I prayed and got some of my will back. But then i felt utterly shatterd. I then felt like i did not know who i was or what i stood for. I began to wonder obsessiverly about life after death, the essence of the soul, consciousness, enlightenment. the derelization continued on and off. Now after praying allot i have a measure of control. However i now get random adrenaline rushes. In addition i now feel very alone even when in a crowd. I wonder about my "true self" and go on philosophical rambles in my head contemplating what it truly means to be me. I get freaked out allot now because i feel like im completly alone. like talking is not enough. like no one can truly feel me. I think about how weird it is that i will only every see life through my eyes and that i can only every expierance my feelings. I become obssesed with trying to find logical answers to these "dilemmas" and questions. I dont want to avoid these thoughts because i fear thats only suppression. And it seems that every time i come to terms with one concern i feel peace...only to be troubled by another "metaphysical" issue the next day. I know that i am not my thoughts, and that these are all just that...thoughts...but still. I do not feel one with myself and traped inside myself. i feel scared of my own existence/autonomy at times and get allot of mind pops and then realize how contradictory my thoughts are. E.g..why would i be scared to live my own life? But at the same time im afraid to live my own individual life. I feel like i/my higher self is fighting my own mind/brain.

I know that if i can conquer this then i will have conquered life's greatest enemy..yourself...but still. I have 2 failed to classes this semester due to the physical symptoms, acquired a substantial amount of debt due to medical procedures and i do not even truly enjoy exercising anymore. I feel i have learned alot about what it truly means to be me and not influenced throughout the whole ordeal. But i do not know if i should continue on fighting like i want to, or if i should go to the doctor to see if he can prescribe something if he thinks i need it. I read somewhere that high iq and anxiety are sort of related and that prospect excites me and gives me hope to maybe push through this. i recently had a torrent of programming/engineering ideas come at me that im going to pursue and slowly feel the martial arts spirit in my reviving. But still..it feels like a win-lose battle. Like a vicious circle that i cannot escape...because well i am the viscous circle. The worst part is that i think that i have my answer to overcome this..but the simplicity of the answer makes me search for more...and the cycle begans anew. I wonder if adreanline aftects the brain. I do not want to go back to who i was before this ordeal and forget all that iv learned...but i do not want to be stuck here all my life..but moving on scares me to. paradox. This is my first post...ever so please advise me if its in the wrong place or anything else wrong.

It sounds like it might be GAD. I really think you should talk to your doctor and seriously consider seeing a therapist. I know from experience how awful anxiety can be, especially when there are a lot of stressful things going on in your life. The panic attacks, the physical pain, and derealization can be pure hell. You should definitely seek help. It will make your life so much better.

Yes there Is some OCD there, Pure O OCD.
The fact you are trying to find answers about your true self and other existential ones, then you worry about them until you find an answer that then gives you peace, only to move on to another, is classic OCD.

Please stop talking about "pure O" OCD. There is no such thing. Just because the compulsions cannot be overly witnessed doesn't mean they're not there.
Sounds more like GAD to me. Intrusive, unwanted thoughts are typical of OCD. Those thoughts induce anxiety because they are mostly irrational and frightening. Not knowing who you are is not irrational. Lots of people don't know who they are and we will never know. Ruminating and wondering what the purpose of my existence is and fearing I might not know who I am is a realistic fear. Not everything is OCD.