Hi, Thanks for posting in HCM. I understand your concern. Sore throat or throat infection can happen after indulging in oral sex. Even though you and your partner could be clean, some amount of bacteria will always be there, which could cause throat infection. It would be thus advisable to clean the parts with antiseptic solution before indulging in to the act. Kindly do the following to overcome them. 1. Do salt water gargling with warm water thrice a day. 2. Use steam inhalation to liquefy the mucous for easy drainage. 3. Take mucolytic-decongestant medications in the form of syrup containing Ambroxyl/Bromhexine. 4. Take medicated lozenges for throat soothening effect when necessary. Strictly avoid consumption of cold items like cold drinks and ice cream. Your symptoms should getter soon by adopting to above measures. Rinsing several times with warm water and salt water gargling after the act would minimize such infections. Hope the information provided would be helpful. All the best.