Hello and congrats on that shiny new hip! So happy to read your update and see you were able to get home on the first day. There's really no place like home.
As others have advised, I wouldn't be doing any stretching. I think walking will help your stiffness and ease some of the swelling.
I was advised to walk about 50 steps with each bathroom break for the first couple of days then increase to 100 steps and so on.
Maybe you would like to try some simple techniques to move some edema? It's a manual lymphatic technique and can be quite helpful, especially if you do it a couple times a day.
I found that getting comfortable, with my legs elevated was most effective. I also added a link to take you to an article for proper elevating of the legs.. I hope this helps!
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Take deep breaths.. deep, as in breathing in to a count of 3 or 4, whatever is best for you. hold it for another count of 3-4, then blow out completely, still using the count that's comfortable for you. A series of at least 6 of these could help get your excess swelling to move. To ensure you are taking proper deep breaths, place your hand on your naval and watch while taking in your breath, if doing this properly you should see your hand move up.
Then, as you slowly breath out, to the same count of either 3, 4 or 5 gently press down and slightly upwards with the palm of your hand.
Do this whenever you feel up to it during the day or night. The more supine that you can get in the recliner or bed, the more effective this can be.. you have lymph nodes located in your groin and sitting up too much can cause a restriction of the lymph flow.
You can, after the breathing, place your hands lightly on your upper thigh, right where the crease is in your groin and lightly stroke upwards towards your naval.
I did this quite a bit post op and while it takes a while for the body to wake up and respond, it will and it will help get the swelling moving.
The reason this can help is because many of our lymph nodes are located in our abdomen. Our breathing combined with moderate pressure over our naval can help to "prime" our lymph system.
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https://bonesmart.org/forum/threads/elevation-the-dos-and-donts.7602/