Thanks for your question on Health Care Magic.
I can understand your concern.
No need to worry much for this symptoms.
You are improving with gaining weight, absence of
fever and shrinking in size of
lymphnodes.
So all these are favourable and suggest that treatment is working.
Pain is mostly due to healing and
fibrosis in the lymphnode.
Anti tb drugs cause healing in the lymphnode.
Healing takes place in the form of fibrosis.
So this process is painful to some patients.
Shrinking in size is suggestive of healing also.
So no need to worry at present, continue anti tb drugs for atleast 6 months.
Don't worry, you will be alright.
Hope I have solved your query.
Wish you good health. Thanks.