Am I wrong for being upset?!

My brother-in-law proposed to his girlfriend the weekend before we found out I was pregnant. No one really knew he was gonna propose until the week before. We also told them I was pregnant right away. They have set their date when I will be 38 weeks across the country and asked my husband to be the best man! Am I wrong for being upset? 
Update: I am not upset with my BIL for the date he has chosen. They picked this date because it is special to them.  They did not pick the date until after they found out I was pregnant and to have it 20+ hours away from where they and their family live. Also from the beginning they said that it wasn't a set date and wouldn't mind changing it for us to be there, then they didn't. The plan is for my husband to go and I to say. I am more upset at the situation that I can go into labor, with our first child, and my husband not be there. Also, I live 4 hours away from any of my own family.