From own experience... First i did not read your visa journey (sorry) but i did do mine as an AOS here in the USA. I did my medical at a doctor in dallas [ From the list of approved drs] and could not produce my child hood vaccinations. So i opted to get them all them and there again. Needless to say, i felt horrible for about a week, But the toll was greater on me body then my immigration process. Honestly I believe that they did not look at my medical until the interview which was months later.