You need to delete the Preview Cache for your Lightroom catalog.
It is located in the same folder as the Lightroom Catalog. The preview cache name ends with Previews.LRDATA and should be deleted. Do not confuse this with *.LRCAT, which should not be deleted.Below is the image of what it is named as Default LightroomcatalogPreviews.Lrdata.
Location /Pictures/Lightroom on Mac and My Pictures\Lightroom on Windows Pictures/Lightroom on MAC
Delete this Folder and restart Lightroom
Let us know if that helps
Ohhhh myyyy goddess I CAN'T THANK YOU ENOUGH. That fixed my problem and even though I had already uninstall and reinstalled lightroom several times all my pictures are still there, OHH YEAHH!!!!
Once again thank you for your help.