Hi, Sam. I'm Robinson, and I’m happy to help you today.
If your CD/DVD tray is stuck, you will need to open it manually. You can do it using a paper clip or SIM card ejector tool, you just need to insert it into the small hole next to the eject button (check the image below) and press until you hear the click and the tray opens.
I hope this information helps. If you have any questions, please let me know and I'll be glad to assist you further.