Removing barriers during Ghusal

After about 3 hours of performing my ghusl for janabah. I found a spot on my chest. This spot had been there before my ghusl. It is the type that is initially pink filled with pus and then later becomes hard like a seed that can be peeled and removed. I had not been aware whether it has been the case that it could’ve been removed during ghusl because I didn’t remove it, only after did I realise that it hard become like a seed and therefore removal. Did this cause a barrier whilst I was performing my ghusl and should I re perform my ghusl