Is it ok to change retainers 1 week after deep cleaning on my left side. right side was clean 2 weeks prior. would this cause gum recession?

No: As long as the retainers fit properly they should not cause recession. Shrinkage of the gingiva is a normal part if the healing process following deep cleanings.

Why?: Properly fitting retainers, fabricated by an Orthodontic Specialist, and worn exactly as directed, doNOT cause gum recession. Gum recession can be caused by, among other things, bacteria, tarter, malocclusion, teeth expanded beyond basal bone support, systemic diseases, etc. see an Orthodontic Specialist to review the "fit" of your retainers, and work with your Dentist or a Periodontist.

Be Careful.: May be a problem. Be sure tissues are no longer bleeding and the Dentist who prescribed the retainers -- I suspect you are talking invisalign -- gives you the OK. Optimally, all cleanings of this type would be completed BEFORE any tooth movement started, and sufficient time allowed for them to heal and stabilize. Movement with uncontrolled gum disease is highly unpredictable regarding bone loss.

Unrelated: Retainers are removable appliances that are worn when the braces are removed, to hold the teeth in their permanent position. A deep cleaning may be recommended if excessive plaque and tartar deposits have developed below the gum line and not related to your retainers.

Yes. No.: Changing retainers OK. Should have no relation to gum recession.