4 yo refusing to sleep in her bed all of the sudden

I’m not sure what changed, but she just keeps saying she wants to sleep in my bed. We started night time potty training a couple months ago and she’s doing great, but I’m not sure if that has something to do with it. I’m also 7 months pregnant- I’ve heard of regressing when the baby comes, but can it happen when you’re prego too? Every time I tuck her into bed and close the door she immediately gets up and I go back to put her in her bed and she has a complete meltdown because she wants to sleep with me. I’ve given in this week, but this has got to stop. Any tips to get her to sleep in her own bed?