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.