Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concern.. According to your symptoms delayed allergic reaction to wasp bite can occur when the stinger from wasp gets embeded in the finger or the part of body where you got stung and the stinger keeps releasing vemon and when the amount becomes considerable a delayed reaction can occur.. In case if the reaction is localized to finger you need not worry but if you have any systemic reaction like rashes ,abdominal pain, nausea and vomiting or breathlessness or anything else you should immediately consult an Emergency Room... In case of localized reaction you should take Claritin or Allegra or Benadryl to relieve the symptoms.. For pain you can take anti-inflammatory painkillers like Ibuprofen or Advil.. Topical application of steroid ointment should be done.. Topical application is Numbing gel like Lignocaine Gel can relieve pain.. Do not put any pressure over the swollen area and no need of placing any pressure or normal bandage.. Do cool compresses. In case if it does not improve or worsen consult a general physician or an Allergist and get evlauated.. Hope this information helps.. Thanks and regards.. Dr.Honey Nandwani Arora..