@tct Bingo! You have most likely hit it right on - now you need to concentrate on standing upright and walking straight. After hip replacement, my PT strongly suggested new shoes as well - at least the everyday ones, because all the recently worn ones were "imprinted" with my limping gait from before surgery.
If self-care doesn't help, I would suggest a few sessions with a rehab therapist to work on your gait. Mine was so messed up after 2 hip replacements and several revisions that my PCP suggested seeing a back surgeon - but the ortho sent me to PT - it took several weeks to work it out.

Have you mentioned this to your surgeon or a PT?