How are you? During breast feeding, tender/small lump in the breast can be due to free movement of milk that is stopped because of a block in some duct of the breast. Massaging the area or using warm compress on the area will help the lump to dissolve. However, if this persists, i agree with being vigilant with your health. Given your family background, Mammogram, ultrasound and CA125 will be very helpful in ruling out cancer.
Take care and keep us posted.
Thanks for all the helpful input. I have the implants that were half saline half silicone, they were called fuzzies. I was never told that they had a shelf life when I got them put in. I hope all this lump and cancer scare is benign. I will keep posted on the outcome! Thanks again.