Experiencing pain or tingling in the penis head, especially after unprotected sex, may be a cause for concern. It could be related to various factors such as infection, inflammation, or irritation. It's crucial to promptly consult with a healthcare professional to undergo a thorough examination, including testing for sexually transmitted infections (STIs) and other potential causes. Providing a detailed medical history, including recent sexual activity, will aid in determining the appropriate diagnosis and treatment for your specific situation.

You need examination by a urologist for further evaluation to check why tingling in penis is happening and start the treatment accordingly.