Its normal to experience slight mobility in teeth (loose teeth) immediately after braces removal. But gradually this mobility should decrease. Since a fixed retainer is already placed (wire glued behind the teeth), chances of relapse are minimal. If there is pain, bleeding or increasing mobility in your teeth then you should consult your doctor immediately . Otherwise just try to maintain good oral hygiene, gradually everything will feel normal. All the best.

Hello, As I don't have any history of why was the braces treatment done, condition of your gums and underlying bone. It will be better if you call your orthodontic office and tell them about your concern. They will surely help you. Hope that helps.