Is my over jet normal? (Photos)

Over the past couple days, I have been noticing a slight overjet in my teeth. I have researched that 1-2 mm of overjet is normal. I have had braces before, I recently lost my retainer. I have made an appointment with my orthodontist to get fitted for a new one. How much of an over jet do I have and is this normal? If I do get fitted with a new retainer, will this be able to fix my over jet? Thoughts are greatly appreciated. Thank you so much!

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