hi..thanks for your query
Assuming that what you say is correct and it is actually an insect bite, it is important to know that in certain cases the insect bite reactions may very severe.From what you have described, you should visit a dermatologist
to get the correct prescription of medicines.in certain cases, oral antibiotics
and steroids might also be required.Apply a cold pack or cloth filled with ice to reduce pain and swelling.
Try a pain reliever, such as ibuprofen
to ease pain from bites or stings.
Hope this helps..Take care!