Congratulations on your interview!! Damo’s idea is prudent: seeing if another medical report form may be signed, packed and sealed for USCIS’s use is the most proactive step, especially since the officer wasn’t sure the form you handed to her would be accepted, it is likely the medical form copy didn’t satisfy the supervisor; so please try to do this(if not possible to see the initial Dr. today, I think tomorrow is ok too, other members and moderators can comment on this). In addition to this step, my advice concerns the process to hand-deliver the new medical report form in person to the Baltimore FO: this specific FO(since April 1 2019) has been incredibly difficult to enter or get word inside(no matter the reason of your visit) without an infopass or interview appointment. In light of this, id strongly suggest calling the USCIS 1(800) number to try to schedule an infopass(most likely through a tier-2 officer. You can explain the issue at hand and therefore the need for an appointment very soon. This will help you take care of 2 issues at the FO:
1) get you through the entrance security without too many questions, if any;
2) once inside, ask to speak with the interview IO or the supervisor in charge of DV cases, so as to make sure you hand the new form over to the person who will make a decision on your case (and most likely the same person who called your husband in the first place after your interview).
Please also get them to sign a document that confirms they received it(God forbid the new medical form is not appropriately filed with the rest of your application because of an error; just imagine if you simply leave the new medical envelope to security at the entrance(because that’s as far as one can go with infopass) and don’t hear from the FO for while, only for the FO to call again in August and September saying they’re still waiting on your response with a new medical form!).
I think an infopass will ensure a timely solution but more importantly you’ll get to speak with the officer(or supervisor, as it appears from your description of the interview that this IO is reporting to someone else higher up) face to face and not only hand in the new form but also get to ask whether they’re now satisfied with your file overall (and also asking about background check status, and other questions etc. just to make sure they have everything) and who knows, they may even approve you on the spot when you bring the new medical form.
Keep us posted of how it goes, and God speed!