Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
As per your explanation it looks like you have allergic reaction
that is causing itching around the mouth and swelling of lips also known as Allergic Angioedema
You should consult an Emergency room and get evaluated.
A blood test can be done to rule out allergic reaction.
You can be advised anti allergic medicine like Allegra
or Levocetrizine and also apply Calamine
lotion around the lips for relieving itching and soothing the skin.
Do ice packs over the lips and around the lips.
Drink plenty of water.
Hope I have answered your query. Let me know if I can assist you further.
Regards, Dr. Honey Arora.