Quote From williamsonj90:
My biggest fear is that they have offered the position to another candidate and I am second choice incase their first choice cannot accept the offer. If that person confirms then they will let me know that i am unsuccessful.
That could well be the case. If so, at least you are still in with a shot. Don't take it personally if you are not the first choice. You wouldn't even be considered as second choice if you were simply not right for the role. So it is a partial endorsement, even if it doesn't lead to your preferred outcome.
I'd suggest applying for some other PhDs in the meantime. It will provide you with a distraction and help you detach from this one opportunity, as well as getting the ball rolling should you need to try again. It's par for the course to go through a few rejections, so don't let it deter you too much.