Presence of pus pockets in the tonsils suggests that you might be having Acute Tonsillitis
And the itching of the roof of your mouth may be attributed to post-nasal drip.
Management consists of:
1. Gargle with warm salt water to relieve throat pain.
2. Antihistamines to control runny nose & itching of roof of mouth.
3. Analgesics like paracetamol
4. Antibiotics like amoxicillin
to remove the causative organism of Tonsillitis.
So...it will be better to meet an ENT specialist
& start the treatment.
There is no need to worry...you will be perfectly fine.
Wishing you a speedy recovery.
Thanks & take care.