Thank you so much AngryDwarf, I feel like a weight has been lifted!
One last question though, how long did it take Bitcoin Core to finish synchronizing for you? It says for me it will take 40 hours... I just really want to purchase something now!!
Bitcoin Core took a few days for me. You only need to wait through that once though, as the blockchain is saved to your computer. If you stop it, wait a while and open it again, you'll only have to download the blocks you missed.