My biggest fear is having the u/s's most of my m/c's have happened within days of having an internal u/s. I Know it's silly but most of the time I've had one I've been told everything is ok then days later start bleeding and its all over.
I don't think it is silly at all. My DS used to kick even the doppler away and reacted to it quite noticeably. In the end I asked the middies to only use a pinard. The WHO have some studies that show that U/S over-exposure can create kids who are left handed despite there being no family history of it, which would indicate it can cause neutral changes in some babies. So you wanting less U/S's is perfectly reasonable, and fear at this early stage not completely unfounded. Better to be safe than sorry. And BTW, congrats!