I have a pulling sensation from my belly button down to my pubic region, like a string connecting it, when i lean back it hurts worse. what is it?

?muscular?: The rectus abdominis muscles are the paired "6-pack" muscles that run from the rib cage to the pubic bone. Pain at the umbilicus that radiates to the groin may be caused by a pulled muscle. If the pain persists, i advise you to seek out medical attention as a physical examination would be very helpful in this situation.

Hard to tell: I would recommend and exam nd ct scan.