Hello thank you for the reply!
No, I never received a warning when I listed my item! I just double checked the listing as well and I still do not see any warning. It says "your item is for sale".
I was thinking that maybe I do have a limit as to how many items I can sell at once and so I deleted one of my older listings. That listing is still showing up under "items for sale" yet when you click on the actual link it says "item has ended". I'm wondering if it's just the Ebay website being slow with its updates?