im 39 yrs old 5ft 2, i weigh 10st 12 lb, i was sent for an ultra sound scan due to lower back leg and bum pain, bleeding between periods my periods have change i have had problems with my bladder for months needing to urintate constanly that had oddly just stopped. the person who done the scan said he thinks he could see a fybroid but also that my muscles in my womb looked very mottled, what does that mean? and is it serious?