How to comfortably sleep on stomach!?

Mi

So I’ve slept in the same position for my entire life- on my stomach, leaned to the side, one leg straight and one leg bent. Like this!

I’m 19+1 and my belly is starting to get uncomfortable.. I’ve been trying to train myself to sleep on my side since the beginning of the pregnancy, but it just isn’t happening. Does anyone have any suggestions for specific pillows, methods, etc for being able to continue to sleep in this position comfortably?