Scared I messed up my gum graft. Is this normal?

I had a gum graft 4 days ago and accidentially pushed it sideways alittle i think while washing my face i didnt think i was usuing much pressure but i can taste alittle blood in my mouth.. im scared its moved and ive now caused it to provably fail. I know not to look at it so i havent but did notice black tissue at the top.. is this normal? Could i have moved it that much to fail after 4 days? I was wiping my makup off and it would have hit the very edge of one side pushing it to the other .