Hey there.. i am 36 years old and my sister has just been diagnosed with stage 3 triple negative breast cancer. Myself and my younger sisrer who is 33 have both had a bread exam at the doctors office and both have found lumps in our breasts. We have appointments booked in a fews days to be seen for a mamogram. What are the chances of all 3 sister having it?? Im panicking as i want to be strong enough to support my big sis but now have this on my mind too. Thanks in advance you'll ..