New random space beside the left front tooth? i have nice teeth(braces) and a permanent retainer as well, what could be happening?

Retainer: Nothing in life is permanent, except death and taxes. It is possible that your resin bonded retainer somehow "de-bonded" from one of your teeth, allowing the teeth to shift. Make a call to your orthodontist ASAP to see if the space can be closed with some very minor treatment. Then the retainer can be rebonded, or you can opt for a removable one you wear at night.

Dentist / Orthodon: Im not a dentist, but sometimes despite retainers, teeth will shift and move. I would see your dentist or orthodontist to perform a full check and see if they can arrest or reverse this process. Good luck

Possibly clenching: The type and age of the retainer is a factor. If you are clenching or bruxing, then you could have relapse. Do you wear the retainer? An exam is in order to determine the cause. If the original practitioner is not available, then ask for a referral.

See Orthodontist: See the Orthodontist that treated you. You could have a partially loosened permanent retainer, parafunctional habits, occlusal interferences, or other easily resolved issues. After teeth have been moved it's not like putting steel posts into concrete. Bone is a living tissue that undergoes revision throughout your life.