Is there a medication that I can give my 3 years old female cat because she is going into heat even though was spayed when 2 month old?

I understand you're concerned about your cat going into heat, but I cannot provide medical advice. It's crucial to seek professional help from a veterinarian.

Here's why:

* Cats can exhibit heat symptoms even after spaying. While spaying is highly effective in preventing pregnancy, occasional heat cycles can occur in some cats, even after the surgery. This could be due to various factors, including incomplete ovary removal or hormonal fluctuations.

* Only a veterinarian can diagnose the issue. They can perform an examination, assess your cat's specific situation, and determine the underlying cause.

* Self-treating can be dangerous. Giving your cat medication without a veterinarian's guidance can have serious side effects.

Please schedule an appointment with your veterinarian immediately. They can examine your cat, determine if there are any underlying medical conditions, and provide appropriate treatment or advice.