Hi, Thanks for posting in HCM. I understand your concern. What white patches you have noticed after having oral sex could be due to inflammation of tonsils. Nothing to worry about it much as you can overcome it by undertaking the following measures. 1. Do salt water gargling with warm water twice daily. 2. Take decongestant medication in the form of syrup. 3. Use medicated lozanges to soothen the throat. 4. Use regularly Chlorhexidine mouth wash to maintain good oral hygiene. Gradually, your symptoms should subside and be back to normal. Hope the information provided would be helpful. All the best.