@teatea Ow! I just went to my orthopedic surgeon complaining of hip-groin-knee-shin-foot pain (after days in the garden.) At my age, my body is constantly finding new ways to complain.
After x-rays and a physical exam he determined that I had degenerating discs irritated by bending, turning and lifting. His advice - ice, anti-inflammatories, ice, stretches morning and afternoon, and more ice. If this doesn't work we will try PT and possibly an x-ray guided injection.
I also find it helpful to stay away from too-hard and too-soft seating. I use anatomical memory-foam cushions both on my kitchen/desk chair and my sofa.
Have you tried icing & ibuprofen to see if it helps?