Thanks for the query posted .
I would be pleased to assist you with your query.
You seem to be having an Acute Systemic Auto eczematization to some insect bite with the description of the blisters that you have mentioned .
You will need to put over the counter Cortaid cream on the area.
You will also need to take over the counter anti histamines
In case of any lip swelling
or breathlessness Please do see a Doctor .
Thanks and Take care