Opinions

Harlee • Hey guys ! My name is Harlee , I am 19 years old, my fiancé and I have been trying to have a baby for roughly a year now but sadly we`ve had 2 miscarriages and have not been able to get pregnant ):
The topic of a 3sum has came up between my SO and I quite a few Times, it's something I really want to consider but when it comes to picking another girl when we finally decide to ask one, they aren't interested and I have lost two of my good friends due to asking them if they would be interested... opinions on how we would find a 3rd? Pros? Cons? Advice? Opinion? Stories about your 3sum? TIA