My sister is pregnant, and she's due near my wedding date. Should I ask her not to go?

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My sister is pregnant, and shes due near my wedding date. Should I ask her not to go?
My sister is due with her third child around my wedding date... my wedding date has been planned for a over year. I asked the venue if it was possible to change the weekend but because of the virus, they're booked because of rescheduling until next April.

My sister is the maid of honor, but I don't want her pregnancy getting in the way of my wedding. She already had hers, she's had kids, and I spent a lot of money on this for the attention to be on my fiance and me. My friends told me I'm being unreasonable, but I really don't think I am. It's not like I can tell her to hold the baby in. When your body is ready, then it's happening. But I don't her going into labor on my wedding day because that's supposed to be about my fiance and me.

Am I being unreasonable for wanting to tell her to stay home and not go?
Updates
+1 y
So my sister and I decided she will go to the wedding, be a maid of honor, but as of now, she possibly will not stay for the reception, and one my bridesmaids also agreed to be a back up maid of honor in case she has to drop out.

So to all of you who said I was being selfish... lolololol, even my sister said I wasn't, and she understood that day is about me.
My sister is pregnant, and she's due near my wedding date. Should I ask her not to go?
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