Indigestion, stomach swelling hungerless

Hi Doctor! I am facing problem in digestion from 4 weeks. Stool is not passing clearly. I have to go for toilet min 2 times in the morning and 1 or 2 times in the evening. But the stomach is not cleaning well. After each food, I felt that freequently stool may pass. But when I go for toilet, stool do not pass completely. Whole abdomen started swelling after lunch and it swelled too much in the night daily. I have lost  interest in taking dinner at all. If forcefully I took dinner, it seems that the taken food exhale by vomiting. Sometimes the stomach get pain in the  lower left portion. I am suffered from weakness due to less eating in the fear of indigestion. Indigestion, problem in stool passing, swelling of abdomen, pain, hungerlessness is my basic problem. Please take my issue seriously and help me.