sleeping on sides or back?

I am approaching 28 weeks in 3 days, I also find it hard to keep sleeping on side. They say left side is better but I have to Switch to right sometimes. In the middle of night I do wake up sleeping on my back which actually is more comfortable for me. But no choice still have to keep forcing myself to sleep on left consciously. Actually my gyane at tmc said it doesn’t matter but so many articles recommend sleeping on left 😅