Ending up on my stomach

At night I end up rolling onto my 19 week old stomach. I'm not happy about it. I adjusted well to side sleeping with my other 2 kids, I just cannot seem to stop stomach sleeping 🙁

We've tried packing pillows around me to keep me immobile. I've slept on the couch to have me more confined. But it seems like no matter what I still end up on my stomach

It's not even just baby I'm scared about. It's made me reflux so much worse. I don't know what to do anymore :(