laying down pregnant

i was wondering if it’s ok to lay slightly backwards with a pillow behind you . that way you’re not completely on your left side .

when i sleep at night i use a boppy pillow in the front for my belly and a body pillow touching my back and i kind of angle myself off my left hip sometimes in the middle of the night to get the numbness to go away on my left side . i was wondering if this is ok. since i’m not completely flat on my back?