Stomach related problems. Me a solution.

These problems started more than 3 months ago. My stomach remains bloated the entire day since 3 months also it feels full and i dont feel like eating food. At times i get vague stomach pain too. There seems to be a lump or protrusion on my upper left abdomen at the end of my ribs and has been growing ever since. I dont know if its something to be checked or not. I have no pain there, it just feels stiff. I also have been sweating a lot at night and at times soaking the bedsheet too. The night sweats have reduced now. But now my lower back hurts a lot and at times is focused on the right lower back. These are all the problems ive been having. Please do provide me with insight as to what these problems are due to and provide me a solution. Thank you.