My husband and I are married for 40 yrs. Hes 60 and I'm 58, we hadn't had sex for a long time due to his BP meds that made him impotent anyway recently we started having sex again as his BP meds were changed , we had oral sex and my husband broke out in sores on his tongue,we are both loyal and never cheated on each other can someone tell me what this could be? I'm extremely clean so I don't know what the problem is>