Hi Dolores. My name is*****'m sorry that you're having this problem. It would be my pleasure to assist you.
If your dvd tray has a small pinhole on it, you can try bending a paper clip so you can insert one end of the paper clip into the hole and gently press. This should cause the dvd tray to open.
Please give this a try and let me know how it works for you. If this solves the problem, would you mind taking a moment to rate my service? I'd really appreciate it! Without a rating I am not credited for my answer. If this doesn't solve the problem, please reply with the brand and model of the device that the dvd is in so we can continue troubleshooting.