So im not sure exactly what i have. From reading and doing a little research i believe it to possibly be a fossilized sauropod egg. Any help would be much appreciated.

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It's very, very hard to say from the pictures, but I would be inclined to say that the fracture pattern indicates it's a nodule of some kind.  An egg would be unlikely to break in that way, and if it did there's no reason it owuld be preserved intact but broken (If the peices broke during burial, it would be more flattened, and if the broke before burial it wouldn't be whole).

However, that's just based on the photo.  You might have more luck taking it in person to a local museum.