Do you mean “GOM” insect or a local name for a specific insect? Please send a photo or tell me your country and what it looks like, since treatment can differ for a bee/wasp, caterpillar, spider, centipede, or mosquito bite.

For a mild, unidentified insect bite meanwhile:

Get emergency help now for trouble breathing, throat/lip/tongue swelling, faintness, widespread hives, or rapidly worsening swelling. Seek medical care if there is pus, fever, spreading redness, severe pain, or a worsening wound. NHS first-aid guidance covers these measures.