Hi, I have just woken up to find a contact lens that has been floating around the back of my eye for a few days has now become adhered to my eyeball. I'm not sure if it a whole contact lens or a piece of one but, I can see an edge and can get hold of this. However, when I try to remove the lens it is impossible and I can feel a tug on my eyeball. Very frightened by this. I don't know what to do. Any advice? Please help.