Hello Rachael ... Irregular excessive bleeding pv the cause is age related. Swabs will be helpful to know if it is an infection / are they doing cytology also ? ( called Pap smear
Some of the common causes of excessive bleeding pv are Fibroid uterus
... a growth, benign, in the uterus, infection of the mouth of the uterus, growth of the uterus mouth ( polyp ) and lastly please rule out malignancy.
All the baove causes may give rise to pain in the lower part of the tummy.