I got a new retainer to fix a minor problem, wearing it 24/7, took it out to eat & noticed my tooth is loose, i've had my retainer for a month?

Minor tooth movement: Retainers move teeth through bone like braces. It loosens the tooth to a better position. Then the tooth will tighten up in the bone. But to be sure call the office to ask.

That's good: That means your teeth are moving into position. Once they are where they belong the retainer worn 24/7 will help them stabilize. If you're concerned, see your Orthodontic Specialist to check the treatment regimen.