My daughter, also 21, has pelvic pain on her left side, lower back pain, nausea, pain and pressure when wiping, and painful sex. She's been on bc for 2 years however she grew a lemon size cyst behind her uterus. Her Gyno says it's simple and prob their because she's ovulating. Wants her to stay on the pill and check again in three months. Her grandma died of ovarian cancer. Should we get a second opinion? Worried.