Am gonna be speaking from experience, I had a lump on both sides of my breast and I got checked out at united vision by Doctor Bogale, he is a very well known doctor in this cases. About the process, it depends on ur case gen mine was, I was tested physically then through ultrasound and also they took a sample blood from my breast and no don't freak out it doesn't hurt. Be strong and stop worrying, go and get checked out as soon as possible. The sooner the better