It seems to be constipation
Welcome to Healthcare Magic,
I have gone through your history and the reports you have attached and understand your concern.
Constipation may be due to improper food intake, inadequate intake of fluids, irregular toilet routines and so on and it may be due to various diseases like Hypothyroidism
(underactive thyroid), irritable bowel syndrome
and inflammatory bowel diseases.
As all your reports are within normal limits, infectious causes of constipation are ruled out. As you have not attached the report of thyroid profile I would suggest you to get it done to rule out hypothyroidism.
I would suggest you to follow these measures to reduce constipation and also belching
1.Eat foods that contain plenty of fibers like fruits and green leafy vegetables. Eating prunes may help.
2.Take plenty of fluids (atleast two liters of fluid per day).
3.Avoid carbonated drinks (colas) and alcoholic beverages.
5.Toileting routines: Do not ignore the feeling of needing the toilet.When you go to the toilet, it should be unhurried, with enough time to ensure that you can empty your bowel.
6.Continue the medications prescribed by your doctor.
Hope with these remedies,your condition will improve. If any further queries,feel free to post.