Would you stop TTC for your friend?

Okay ladies question for you. My husband and I are TTC our first child and began this past July. So far, BFN. My friend is getting married October of 2018 and I am in her wedding party. Her wedding requires me to travel half way across the country. Here is my problem, if I don't get pregnant soon, I won't be able to travel for her wedding. I'm not going to travel halfway across the country when I have just given birth (due to my circumstances I will be having a scheduled c section). Also, you can't travel via plane in your last trimester. So, what would you ladies do? Stop TTC for awhile so you could make it OR tell her you can't be a part of her wedding. This is a really, really tough spot for me. We have been friends for over 20 years. I'd just like to get some opinions. Thanks!