Will laying on your stomach help with not getting a seroma after a tummy tuck?

Thank you for sharing your question.  Though laying on your stomach would apply external pressure to your skin it is unlikely to make a material difference in the formation of a seroma.  You are better served with a compression garment that can provide pressure and can help minimize sheer.  Hope this helps.

Lying on your stomach should not impact you developing a seroma or not...................................

Thank you for your question.
There are no well designed studies that support laying on your stomach to reduce seroma formation.  Could it work? Possibly.  Could it be harmful? Possibly. 
The reality is that during sleep we all move around quite a bit and therefore any compression from laying on your stomach would not be uniform and might actually produce shear on newly forming connections between abdominal wall and skin.  Every surgeon will have a different protocol. Personally in the absence of good scientific data I advise patients to do what's comfortable.
Best Dr. L

I use drains and a binder in my tummy tuck patients immediately after surgery to reduce the risk of seroma.  Once the drainage from the drains is minimal, I remove them and then have patients get into a stage two garment which is a spanx type compression garment.  This combination makes risk of seroma low.  Laying on your stomach may put too much tension on the abdomen after a tummy tuck, a preferred position is lying on your back with your head elevated.  Once a little time passes, a side lying position is fine as well.  Your surgeon will be able to address their specific instructions for your post op care.