Hip and thigh pain

[Gouldengirl9]

My sister 61 had her 2nd AZ vaccine in the beginning of May. She started to have very stiff thighs and now she has painful hips.
Has anyone else suffered from these symptoms.
She is also on letrozole after beating breast cancer but this is not on the list of side effects from these.

According to Google

"Women taking a type of hormone therapy called aromatase inhibitors (such as anastrozole, letrozole and exemestane) for breast cancer, may have joint pain and sometimes muscle pain. This is probably caused by a decrease in oestrogen levels. Joint pain is also a common symptom of the menopause."

So it sounds more likely to be connected to the letrozole than the vaccine. Maybe worth a chat with her GP?