hello and welcome to HCM,
The whitish lumps are called the tonsillolith
or tonsil stones which are collections over and inside the tonsils in areas called the crypts.These are harmless and self limiting which gets better over time with medications and general measures.
The tonsils are infected and thats why they appear swollen
If your pain is more you can consider taking injectables for better symptom control in consultation with your ENT
You can take paracetamol
as they are different tablets and have no relation to each other. Make sure that you are not taking any other pain killer though.
However if the symptoms are recurring and since you are getting recurrent such lesions it is advisable that you consult an ENT who may advice treatment which can be in the lines of medication or even removal of tonsil which can cure the problem
get well soon
take only warm fluids and do salt water gargle
Dr Sriram Nathan