You would have had a white puss penis discharge or itching inside your urethra after about 6 days if you got ngu from the oral
Very low risk but any risk for her would need testing.
The risk would be from the unprotected oral as it can form in the back of her throat. Im not sure weather informing her is the best approach to save your marriage. Maybe test first since its very low risk activity.
Hi your exposure was to Gonoreah, Syphilis and Herpes but without a white puss penis discharge, none of what you mention are symptoms of any std and for your wifes protection test for these at the correct window period as below for her protection:
1. Gono 7 days
2. syphilis---6 weeks
3. Herpes----3 months