ETH transfer not showing up

I bought some ETH using Coinbase this morning. The transaction went through just fine. I then tried to send the full amount to my Trezor wallet address. The transfer immediately said it went through on Coinbase. Now, my Coinbase balance remains the same in USD, but it says I have zero ETH. My transfer to Trezor isn’t even showing up on Coinbase as pending or delayed under recent transactions, and obviously the funds haven’t arrived to my Trezor address. Anybody else experiencing this issue? Is the transaction indeed pending? Should I keep waiting? It has been several hours. Thanks.