Is my Invisalign fitting properly? (photos)

It looks pretty good if you are newly into this set of aligners. It is important to bite on cotton rolls or a rubber type of device for 15 minutes every day to seat aligners fully and stretch the periodontal ligaments. You can take a rubber wine cork and cut it in half lengthwise and bite on this for this exercise. Bite10 seconds "on" the rest 5 seconds and repeat for 15 minutes once or twice daily. With your advanced crowding, I would recommend twice daily.  This has resulted in success in even my most difficult cases.

Hello, thanks for your questions. Your orthodontist is correct to have you changing trays weekly, this is new (late 2016) protocol from Invisalign Align Technologies. Tray fit and tooth tracking isn't a new challenge with Invisalign. When you place your trays, try biting down on some cotton rolls on both sides to help seat the tray. New trays will always feel tight at first but should start to feel comfortable after wearing them for a while. Invisalign recommends wearing the trays 22 hours a day for predictable results. Sometimes a tooth that is crowded out of the arch stops tracking with the rest of the teeth because it has no where to go (no space). This usually means you need IPR or arch expansion or some combination to create space. This can be done during treatment or during refinement. You're still at the very beginning of your treatment (3rd set of trays) and its likely this is a part of your treatment plan but hasn't been completed yet.