Thebeek15 -- Don't give up ("Oh well") so easily. Here is my opinion, speaking as a college spelunker and Geology minor, of your finds.
You said you found the two rocks while "walking up a limestone spring." That indicates to me that the "spherical" rock is a limestone nodule, possibly an agate eroded out of the matrix rock, or some kind of chert.
Again keeping Limestone in mind, the cylindrical rock looks like some type of fossil coral. Or perhaps, some kind of Crinoid. Because my college years were over 50 years ago, I am no longer quick to recall the correct individual ID of various stone, mineral, and fossil specimens.
I think TreasureNet has a Fossils forum, but I haven't looked at it in a long time, so I can't say how active it is.