1. You haven't mentioned the duration and details of your present symptom viz. 'loose motion in the morning'. Anyway. Taking for granted a short duration of this problem (Maximum over a couple of weeks or so), it may have been caused by an endemic intestinal
infection like amoebic colitis
or subacute enteritis (viral) etc. It will be cured with appropriate treatment prescribed by your doctor.
2. If your tubercular disease has been treated adequately surgically+medically, and if your innate immunity
is good, then you will be able to live a normal life.
However, there is a pitfall in this answer which needs to be discussed as you have not mentioned the exact segment of the intestine
that was resected during surgery. If terminal ileum is resected, then malabsorption
may result which in turn can lead to loose motions. You will be able to get this issue clarified easily from your physician/surgeon.
Thanks. Wish you all the best.