Welcome back to the Forum.  On this occasion I happened to pick up your questions.  To prepare to reply I reviewed your earlier interactions with Dr. Handsfield.   I'm struck by the similarity of this encounter to the two earlier times you came to the Forum regarding an encounter which you then came to regret.  The answers are the same as with your prior questions. 

As with your prior encounters with this partner, this is most probably a low risk encounter,  He says he not infected and to your knowledge does not engage in high risk encounters outside his marriage.  That said, particularly given your concerns due to being pregnant I understand your desire to rule out the possibility of infection.  I suspect that your tests will be negative.  The important STIs to rule out are gonorrhea and chlamydia.  Syphilis is very rare among heterosexual men and women and I do not feel it is important for you to test for syphilis or, for that matter HIV but understand if you choose to test.   The timing of the testing your have suggested is appropriate.

I hope these comments are helpful.  EWH 

I anticipate that your tests will be negative and when they are you can be confident that neither you nor your baby nor your husband will be at risk.  Further, it will certainly be OK from an Infectious Disease perspective to have unprotected sex with your husband at that time.  In the unlikely event that your test is positive, following successful treatment there will be no continuing risk to your baby and you can have sex with your husband any time more than 3 days after your treatment. 

As I said before, I see no need for syphilis or HIV testing. 

The bump on your rear end is unlikely to  be an STI. 

To be entirely sure that your throat is not infected, you should test.  Throat STIs will often be asymptomatic although I must say again that your risk for having any STI anywhere at this time is extraordinarily low.  EWH

Thank you for the follow-up.  I'm not surprised at your results but I know that it is a relief to you.  In answer to your follow-up questions:

1,  I am confident that your throat tests will be negative as well.

2.  Yes it is safe for you to have unprotected vaginal sex with your husband.

3.  Correct, I do not see a need for syphilis or HIV testing in your circumstance. 

I hope that this will help you to move forward.  As you know, we provide up to three responses to each client's questions. Thus this will be my last response and the thread will be closed later today.  Take care.  Please don't worry.  EWH