excessive stress and sweating

Hello,
I am a male of 22 years old. Height 1,75m, weight 110 kg.
I have been having these symptoms, I wonder if you can help:

-In the morning when I wake up and visit the toilet, the first time my stools are hard. Then after a few mins, I feel the need to go to the toilet again, and this time the stools are very soft. This usually happens a few mins after the first and especially when I move for some reason. This is very annoying.
-I also noticed that if I drink milk or dairy, I tend to have bloating and watery stools, after which the area around the anus feels burning, even if it is cleansed well.
-I get hot very easily. I sweat very easily when moving and when the weather is warm.
-When I am stressed I tend to feel hot and sweat easily.
-I can lose my temper very easily and worry very much about exams.
-I desire cold drinks summer and winter.
-I love fruits and juices.
-I am obese and crave sweet things most of the time. Especially ice-cream (although I dont like milk).
-I feel aversion to beef and lamp meat while I like chicken and fish for example, pork less.
-I like reading books on spirituality/philosophy/religion/science fiction.

Thanks in advance,
Andreas