Had sore throat that got better taking zyrtec (cetirizine) and ibuprofen but now have a sharp ache on the right side of my throat when yawning. cause of concern?

Yes: Sounds like you have treated the throat appropriately. If the throat is not improving then you should probably get checked. Fever?,

Dr. can check throat: Throat pain can be from a strep throat infection (antibiotics are needed), a cold or influenza (antibiotics usually not used), or from some other cause such as allergies or irritants. Usually, a person sees the doctor if the sore throat is bothersome (as in this case), recurrent, or doesn't go away quickly (mainly to check for strep throat).

Therapy: You will feel better if you will keep ibuprofen 3 times a day : 2 tab at once=400 mg. and honey with hot tea for 3-5 days. If the jaw pain get worse make apt with dr.