I also had my first m/c abroad, while I was on a business trip, and just a couple of days before my own wedding. It was identical twins (we had not known this prior to the m/c). Luckily it was in an English speaking country (Australia), and DH was with me, so that was OK, but it was still not a nice experience having all this happen in a hotel in the middle of attending an international conference with my collegues. Two days after the ERPC I flew from Australia to South Africa for my wedding, and had to generally carry on as though everything was wonderful.
I was assured a lot by the doctors in Australia that it was not anything I did wrong, and I am sure this is the same for you. I have gone on to have two further m/c's, those times I had not gone anywhere or done anything prohibited, so I know that none of them were my fault.
I was, however, very cross with the NHS about the circumstances of the first m/c. I had asked my GP repeatedly if I could have a scan before I left on my business trip and wedding trip, as I was going to be away for over three weeks, which would include the time when I was to be 12 weeks pg. I was assured I could have the scan, and the hospital was informed ( I saw the letter the GP wrote to the hospital, with URGENT written all over it and the circumstances explained), but but by the day I left I had still heard nothing (if I had known all I know now I would have arranged a private scan, but then I was not even thinking about m/c, just assuming everything would be OK).
At just over 10 weeks, in Australia, I started bleeding and found on a scan that the babies had died 4 weeks earlier. If I had known that I would of course not even been in Australia, and I would not have been bleeding and feeling terrible at my own wedding, as I could have sorted things out before I left.
I would not now ever rely on the NHS for early pg care, I am sorry to say. (I work for the NHS myself, but this is the case).
Itsme, please don't blame yourself, these things do happen whatever we do.