Possibly a Bridesmaid

I would wait for her to ask you and then let her know that you could possibly be pregnant and see what she says.

If she is uncomfortable with that, I would tell her you will have to decline.

Yes I agree with PP. I would wait until she says something to you

Agreed with PPs, but I also wanted to add, if your friend has a problem with you living your own life and being pregnant at her wedding... she's not much of a friend at all. I'm sure if she's a decent person, she'd be fine with you being six-months-or-less pregnant at her wedding (congrats and good luck with TTC to you and your husband!)

Unless it’s a secret, you can tell her in private what you’re plans are. Nothing wrong with being honest and up front. However, only tell her if she brings up the topic and actually asks you to be a BM. Then you could tell her your plans and if both you and her are okay with it, move forward.

Rather than waiting for her to ask you to be a bridesmaid and then tellung her you might get pregnant, you could go a different route and just tell her that you were thinking about having a baby soon. She can decide for herself whether she still wants to ask you. Some girls are kinda weird about it, but some are completely fine with it. I am only having a MOH in my wedding, no bridesmaids, and when she told me she was thinking of having a baby, I was thrilled for her! I think it would be easier to tell her your plans and she can make the choice herself without the awkwardness of having already asked you to be a bridesmaid.

My bestie just told me she is expecting and due in late July, my wedding is in early June. We found some beautiful maternity dresses on Azazie that are great options. Selfishly, I’m hoping she’s still up for standing up with me but I’m also wanting her to be comfortable. At this point she’s still in but we’ll see how she’s feeling!

I agree with PPs. If she asks, then definitely let her know. If she has no issue with it, then you’re free to decide! If she does mind, I would advise rethinking that friendship.

I can't imagine someone would care if their bridesmaids were pregnant or not! If she asks, I think it's fine to tell her you are trying but even if you guys got pregnant today, most likely you'd still be pregnant at her wedding and I'm sure you could make it work (and if not due to bed rest or anything, she obviously would understand)!

The thing I'm actually friends with her fiance rather than her so I'm not sure how she would feel about the whole thing.

No need to mention you are trying unless it is important to you to share that with your friend (the wedding should have nothing to do with that decision). If she is a true friend, she won't be so petty to care if you are pregnant. She will be happy for you about this exciting time in you life. One of my bridesmaid was 8 1/2 month pregnant in a wedding last spring. It all worked out.

Wait for her to ask you. I would not tell her you're trying to get pregnant just because of her wedding but if that's something you'd tell her anyway, then do. Often, conceiving happens on a much different timeline than you expect. If she has a problem with you being pregnant at her wedding she's a horrible friend.