Emotional setback

Watched a video on FB and it was a short video about women given birth multiple different ways, and the over whelming joy they had when they delivered and finally got to meet their child. I just got so sad because I feel like that will never be me I will never see that light at the end of the tunnel and even if I did how long would it last before they were tragically taken away from me. Idk I'm just one big ball of emotions, but I promised my SO that we would at least try to have one kid no matter the cost, I just don't know if I can live up to that.