It's more noticeable when I am menstruating, meaning it hurts and feels bigger.. Yesterday I had a Pelvic Ultrasound and before I left the person who did it came back in and said the Dr. wanted to know if I had a scar near there which I have had 4 c-sections but the "knot" is deeper .. and today when I called my doctor the nurse said she didn't really know what the results were saying so she said I needed to make a appointment asap so I did for Monday.. do u think this can be scar tissue?