Sleeping after crown hair transplant

 i had a HT on my crown area. Last night i rolled much in my sleep and i saw i lost a lot of hair in my crown because of the rubbing against the pillow. Can you still damage the grafts at day 20th?

Use an airline pillow and put a pillow on both sides of you so you sleep on your back. Take a good dose of medication to put yourself to sleep. Keep this up for a week.  If this happened at day 20, then there is nothing to worry about as the grafts are fully secure by this time.