Hello,
I had both of my hips done in December 2020, 3 weeks apart. I had the same kind of pain. I think it's because your nerves are healing, I always refer to that pain as my nerves being angry about being messed with and trying to wake up. It will eventually stop. I don't have anymore pain and actually it's like I never had replacements. It took a year to year and a half to feel really good. Now hopefully my knees do the same after a year , I'm 8 months and 6 months post op from knee replacements. I wish you luck and hope this helps.