The answer to 'why is my wasp bites' is that you have likely been stung by a wasp. Wasp stings can be painful and cause swelling, redness, and itching at the site of the sting. Wasps are more aggressive than bees and are more likely to sting when they feel threatened or their nest is disturbed.
Wasp stings are usually not serious for most people, but they can be dangerous for those with allergies. Symptoms of an allergic reaction include difficulty breathing, dizziness, and swelling of the face, throat, or tongue. If you experience these symptoms, seek immediate medical attention.