Problems with Bowels, tummy pain

I am 27 years old, female and have been suffering with something worrying. Since last December I've had sore tummy, down both sides and across the top too and also I've had a mixture of intermittent bouts of constipation and loose stools. Sometimes theres been small bits of blood, never in stools...when I wipe. I've seen my doctor alot, had 2 blood tests (both fine) and a ultascan which did show up capillary hemangioma inside my liver. Now they booked me a CT Scan for the end of the month, to check if theres anymore capillary hemangioma inside me. Now could this be bowel cancer?!? There is no family history but I am scared.