Is my Ghusl valid, if I didn’t know?

A few days ago I made my ghusl and normally went on with my day and prayed. Just now, I took a close look at my nails and noticed that there was a bit of glue, that must have been there from the last time I used glue ( before I made ghusl ). I wonder if that makes my Ghusl invalid, as the whole body has to be wetted for ghusl, but I didn‘t know about the glue until now.