Post Braces and my teeth feel like they don't lay naturally. Is this normal? (Photo)

I recently had my braces removed and now I am 2 weeks in wearing my retainer. I am supposed to wear my retainer 24 hours or as much as possible for at least 6 weeks. When my retainer is off, my jaw feels off set and my teeth are feeling as if they are displaced from my top & bottom rows. My bottom row is pushing on my top row & it doesn't feel comfortable. I wore Invisalign a little over a year. I switched to braces, and only wore braces for a few months to expedite the process.

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