What procedure should I get to fix uneven stomach? (Photo)

Hi there,
I would recommend you find a knowledgeable lymphatic massage practitioner who has ultrasound capability. It look like you are developing fibrosis in the skin. This can be corrected but takes a few months to soften up fully. This normally requires multiple massages by both the therapist and yourself at home over the area, ask the therapist to teach you.
After a few months of treatment you may still need some revision liposuction to break up and abnormal scars and allow the skin to lay better against your body.
All the best

I encourage you to return to your surgeon for an evaluation. An ultrasound can be performed to determine what may be occurring and appropriate treatment recommended. At six weeks you are still early in your recovery.

Correcting poorly done, Liposuction is difficult.
To make an accurate assessment regarding the outcome of a plastic surgery procedure. We always need to see a complete set of proper before and after pictures.
If you don’t have before pictures, then ask your surgeon to forward the pictures they took.
we typically don’t talk about revision or consider doing revisions within the first six months.
It looks like you were over treated. correcting the outcome of this of procedure is difficult, and sometimes not possible.
I suggest giving yourself time to heal, then consider reposting with proper before and after pictures.
Best,
Mats Hagstrom, MD