Thank you for your query.
I would have appreciated if you could have mentioned:
1. Where is the "blockage"?
2. What syrup and antibiotic is being prescribed?
By your description I presume she has a nasal blockage for which routine medicines including antibiotic are being given but nothing for her stomach ache.
I suggest that you get the following investigations done:
1. Stool routine examination.
2. Urine routine examination.
of the whole abdomen.
These would help us in excluding a physical cause of the stomach ache or some psychological problems in the school.
I hope I have answered your query to your satisfaction.
Wishing your daughter an early recovery.