Slept on back with toddler

E • 👼👼🌈🧒 #2 due May 2020!

Last night I had to sleep on my back with my toddler for 2 hours (only way he'd sleep). I was worried about baby this morning and couldn't find baby with doppler at 16 weeks. Anyone have the same issue? Do you think back sleeping is still prob ok at this stage?

This is so hard with a toddler who doesn't sleep!