Wore Jeans 3 Weeks Post Liposuction, Left Indentation, Normal?

What you are describing is very common.  Sometimes even the garments can leave marks which will resolve with time.  At this stage, you have swelling under the skin and any pressure point will leave a dent in the puffy area.  As the swelling resolves, so does the mark.

The indentation is not unexpected. Swelling persists for weeks. Follow up with your plastic surgeon for a follow up if the "dent" persists Good luck

It is very normal to have swelling after liposuction that can come and go for many weeks, and even several months after liposuction. Whenever a tight garment like jeans or something with an elastic band is worn, then a temporary indentation can occur because it is pushing on the swelling and displacing it. Just be sure to wear your compression garment as instructed by your surgeon, but no permanent harm has been done by being out of it for a while.