sleeping positions - is on your back really that bad??

Rosy
I'm 20 weeks and have always slept on my back.
I have been forcing myself to fall asleep on my left hand side but keep waking up in a panic realising I've moved onto my back, it's interrupting my sleep at the time I need it most, and waking up worried is not good! 
Any tips ladies?? I'm not sure the cushion I've seen will stop me moving, is it really that bad to be on your back?

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors