Please Help me To get rid of this prob.

I am Aryan Agarwal. Age:-19 male. Protein rich foods , dairy products doesn't digest me. After eating these kind of food I get:- 1.abdominal bloating. 2. Abdominal cramps 3.Poop doesn't come out even after putting lots of pressure or Comes in little lumps. 4. Feel like going washroom again& again like something obstructing the poop because I feel the pressure down but it's hard to push it out , so after putting pressure of water or use of hands helps me to get poop out but after coming out of washroom stomach gets more bloated and I feel very weak and discomfort and even irritated and still it feels that something is stuck. Stomach is not clear. 5. Because of this problem I don't feel eating anything in morning till 12am because even in morning I don't get poop properly , stomach doesn't clear so feels irritated when someone talks about me for food. 6. In night , sometimes I even get cramps in legs and also leg pain due to gas. 7. If I eat namkeen or anythin relate to oil food.. Acid