Do I need to let my friend know that I’m pregnant before attending her wedding?

Same thing happened to me, I was supposed to be bridesmaid at a Bali wedding and found out I was pregnant a month before the wedding. I had to let the bride know, because we are both party girls and I wanted her to know the reason why I won’t be drinking at the wedding and the pre-parties! 🤣 (also had to give her a heads-up in case I won’t be able to fit into the bridesmaid dress anymore! Lol)