After how many days post-op are the grafts secure in the recipient area and can't be loosened? (Photo)

I got a FUE 6 weeks ago and a total of 3750 grafts and almost all my trsndplanted hair has failed down. Yesterday was at a party and a friend scrub his hand in my receipient area to joke whit me , but that was not so funny. I got little pain because my skin is still sensible but i didn't bleed or something else. My question is can the grafts never grow up because of that? After how many days post op the grafts cannot be pulled out? Thanks a lot