Hi I am unmarried, 28 years old, periods - regular but scanty. Since last 4-5 months I am feeling pain in right side ribs, back & breast. Pain is not sharp however it feels like pulled muscle. Sometime I do feel like there is something in lower part of my breast , hoever I m not sure if that is lump or my bone (as I am thin, my weight is 50kg height 157 cm) I do have feeling that I have breast cancer however avoiding sonography because I am very scared of being diagnosed with cancer. My pain is more prominent before periods. Please advise