Two different meetings on two different days; same Meeting ID.

Welcome to the Zoom Community, @CASSIE2.

If you scheduled two occurrences of a recurring meeting, both will have the same Meeting ID.

If you scheduled two separate meetings (non-recurring), be sure you select Generate Automatically for the Meeting ID when scheduling.

Failure to do this will cause your Personal Meeting ID to be used for both (and indeed, for all meetings generated with Personal Meeting ID selected).  It's preferable to use the Generate Automatically setting from a security perspective.