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Pain or tenderness in breasts, sensitive nipples could be symptoms suggestive of pregnancy. If you suspect chances of pregnancy, look out for development of any other new symptoms suggestive of early pregnancy. Wait and watch for your next periods. If you do not get your periods within 10 days of expected period dates, or if you get abnormal periods, or if you develop symptoms suggestive of pregnancy, you should consider visiting your gynecologist for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). If pregnancy gets ruled out, and if you are still having the symptoms, consider going ahead with thorough evaluation and screening tests along with tumor marker tests to rule out breast cancer (since there is family history of breast cancer). Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet and lifestyle.
Take care.