Dodge Ram water pump problems?

when i drove my truck after about 15 minutes i was parked and let my truck idle afetr about a minute of idling my truck stalled and when i turned it back of it was squeeking and made some noises for about ten seconds and then stopped. I noticed that the pully on my fan coming from the water pump was wobbling. my tempuratue was still normal what could cause this i am suspecting taht the bearings in my water pump went?