Welcome to HealthcareMagic.
Your reports appear to be normal but your symptoms suggest IBS
which is a irritable bowel sun syndrome.Your stressful and unhealthy lifestyle is mainly responsible for it.
Dont worry.It is never too late.first of all try to minimise junk food if u can't totally avoid it.eat less
Oily options like sandwiches, idli etc.
Try to drink plenty of water and exercise or at least brisk walk for half an hour daily.you may benefit from yoga