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I have read the query carefully and from that I can say that this fullness is due to the medicines you must have taken for colitis treatment. it is not that the treatment was wrong, but the drugs many times disturb the normal abdominal process/ bacterial and is leading to gastritis
, fullness, bloating , and sometimes indigestion
As you have gained weight , the fullness can be related to that too..
the reason of weight gain needs to be looked for. Had I been treating you, I would go for ultra sound
abdomen with blood counts, lipid and liver function test and thyroid profile.
only after investigations one can make out the cause for your sudden weight gain. ( and this is important to diagnose).
From my clinical experience I can say that fullness , bloating! ect., can be helped by taking a taking pump inhibitor half and hour before meals, twice a day for a week or so. medicine like-- Omeprazole
should be fine
Till then you may go for soft diet
like khicdi, dalia, etc. and avoid spicy foods, alcohol ( if you take it ) , oily foods, too hot or too cold stuff...
for weight loss
, it would be wise if you start with some exercise regimn/ walk/ or join a gym.
Hope the reply helps you.
feel free to ask more questions related to this.
Dr. Manisha Gopal