Sleeping on my sides

Lizette
 I know my baby came from my left ovary . I'm a stomach sleeper I'm only 10 weeks 3 days . Idk when I can start sleeping on my sides but i started since I found out I was pregnant and I'm dying my sides hurt so bad and I try to switch from both sides but don't want to always lay on my left side much . Does anyone know which side to sleep on and can I still lay on my back ?