I have a nondisplaced fracture of the 4th metacarpal of my non-dominant hand. A small cast was placed. After 3 wks, it is still very painful. WNL?

Yes, most likely. Hand fractures are generally quite painful, but you are getting to the point where that pain should begin to diminish. Older adult women who are post menopausal do tend to heal more slowly, so be certain you are taking vitamin D, at least 2000 units a day, vitamin C, magnesium oxide and a good multivitamin. Talk with your doctor about medication for pain and follow up as planned. Heal up soon!