I would advise you to visit a nearby surgeon or oncologist. Arrange for biopsy from the lesion as the lesion is mentioned as BIRADS4. Not mentioned if it’s 4a, b or c. But still, I wouldn’t advise wait or follow up. Moreover there is family history in your mother. Also you could get your blood checked for Germline BRCA mutation which puts you at increased risk for Breast and other cancers. If positive other members in your family can also undergo screening.
Next Steps
Core biopsy from the breast lesion, then plan further