Tips on sleeping more comfortable?

Carina • 25 years young. baby #1 born April 11th 2017❤️
I'm only 18 weeks pregnant and my stomach is has gotten super hard in the past few weeks. I used to be a stomach sleeper prior to pregnancy so the past few weeks have been really hard. Every way i position myself is uncomfortable and I can't get any good sleep in! I toss and turn all night. My back hurts. So much complaining lol!! Advice please!!🙌🙏