Hi there iowancouple96
This from what I have read is not uncommon. It's happened to me too
My take on things is your trying something so out of the ordinary that it can take a while to relax with the situation. Some folk maybe once or twice, others maybe longer.
Often the more you concentrate on your 'mojo' the worse it gets and then you think about it more....vicious circle!
Maybe build up to it a little more slowly, several times with others in the room, without swapping etc.
If all else fails maybe try viagra, I got some but have not had the chance to try it out yet, looking forward to it though
Good luck