bee sting allergy?

I got stung by a yellow jacket a few hours ago.  How long does it take to develop reactions to it if I have acquired an allergy?

[Dr Rajput]

Hi, most common wasp sting is caused by yellow jacket species. 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.
Local reactions are the most common type of response to insect stings and are seen immediately, and include swelling, erythema, and pain, affecting areas that are seen with the sting site.
The other three reaction types are usually seen when you are exposed to another sting after some period. This reaction will be severe.
You will have local reaction for now and need to be managed by anti histaminics and if required steroids against prescription. You need to keep watch for another 10 days and consult physician if you develop joint pain, fever etc. which is a sign of delayed reactions.
I suggest you to consult dermatologist. Take care and regards.