Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that due to bugbite there has been a localized
allergic reaction leading to swelling as the toxic substance resent in the sting causes allergies ad inflammation in human..
Yellowish stuff can be due to infection at the sting site leading to a bit of pus formation..
Nothing to worry as it will resolve gradually..
As of now you can take anti allergics like
Benadryl or Levocetrazine..
You can take anti-inflammatory painkiller like
Ibuprofen..
You can also apply an antibiotic and
steroid ointment combination over the finger..
Do cool compresses over the swelling..
You can also apply
Calamine lotion as it will help in soothing the skin..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.