Yesterday we got the results from the ultrasound and it seems there are two sacs instead of one - it's not certain to make out since they are very close and it could be only one as well - the doctor said we have to wait the end of the trimester to be completely sure.
Honestly I don't know what to make of it, while I am happy I am a bit concerned about jumping straight to three children. My mother said she expected it because my father was a twin, but I had correct her as the genetics for twins come from the mother' side, not the father's. Wife says it's a miracle but I told her to hold her horses, as we aren't sure yet and it could be a mistake.
In the end, one or two it matters little, we'll welcome all out children with open arms.