Please help me identity - these things keep coming up and go away

Whenever i eat something spiecy, it is okay when i eat but during bowl moment it kills me. Sometimes I am sleepy before bowl, my heart rate goes up, and sometimes when i try to sleep i have kind of shock, my hands and feet start to go numb. But when i poop, everything goes fine. 

Sometimes i also feel like there is poop in my stomuch but it is not coming out. I eat something and if i poop i am much relaxed.

Also if this is related, my body temperature is kind of shaky. Sometimes when i walk or go out in sun, i keep sweating-burning and top of my head keep going hoter and hoter unless i sit down and cool myself, sometimes sleepy as well.

I kind of feel dried out sometimes after sweating or when siting in cold room like i need heat.

I can't pinpoint the problem, maybe i have low blood count, my nerves are weak or something.  I am 27 year old, my weight is normal not very thin or very fat person. I belong to a hot country and had hyperhyderosis in hands and feet all my life, i know how sweating works. But my Top head and nurves in body getting hotter non-stop and sometimes feel driedout doesnt looks normal. 

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