Immunization RFE after interview for AOS

[newLife2010 1]

Well,

we finally cleared the greencard interview. It was fairly painless. The only problem we have is that they are asking for upto date immunization records. We filed for her paperwork little late so we had to do the medical again. We did that got the sealed envelop from the civil surgeon and added it to the AOS application. Everything was fine. But now after the interview we get the letter that some of her vaccines are not upto date, which makes sence. Normally that would not be a problem, we could just go and get all the vaccinations that were missing. But the problem is that my wife is pregnant. We talked to the civil surgeon and they send us page 5 of the I-693 with blanket waiver marked since he says that pregnancy is contraindication. But the USCIS website is not really clear about this (in my opinion) and neither did the call to USCIS was any help.

My questions are

1.) What is this going to do the AOS process? Is it going to make it complicated?

2.) Will just sending the page 5 with the letter be enough?

We also have the ultrasound of the pregnancy.

3.) Should I attach a copy of tha?

4.) How should we word the letter?

We are real confused about this. My wife is getting really stressed about this situation on top of the usual pregnancy stuff. Any help and clarification would be appreciated from VJ netizens.