Hi, welcome to the forum, with wasp sting, the symptom varies from minor bite pain to life threatening anaphylactic shock. The types of manifestations encountered are local reactions, systemic allergic reactions, toxic reactions, and delayed reactions.
According to your history it suggests 'local reactions'. There can be swelling, erythema, and pain, affecting areas that are contiguous with the sting site. Local reactions can arise in about 10 percent of insect stings
Anti histaminics with appropriate steroid therapy will help to alleviate the symptoms.
I suggest you to consult immunologist for detailed evaluation. Take care and regards.
Call Dr but I would take oral benadryl and apply ice packs and also put topical benadryl on effected area.