Possible Uterus cancer - it's a worry

Hi, thought I would just post on here as having read so many posts, I thought I'd introduce myself.  Three weeks ago, after a bout of S&D and terrible tummy cramps, the doctor sent me to A&E.  I had a CT scan, endoscopy (I had a reflux attack whilst at hospital due to excess bile and being unable to eat for 3 days) .  CT scan came back with soft tissue mass on cervix stump and on liver.  I stayed in hospital for three days before discharged.   I had a hysterectory in 2009 after endometrosis and adenomyosis and have been on HRT patches ever since.  I had a colposcopy last week and also a  LEEP procedure.  Consultant said the soft tissue mass was in the pelvic region and inside part of cervixas vaginal inspection looked clear.  I am having an MRI on Sunday.  My concern is Uterus cancer.  They have said it could be this or endometreosis is back again!  This is rare but as I said, I have been on HRT.  My pain in is my groin area, pelvic region and tummy, cramp like pain in waves as opposed to constant.  Urine tests showed traces of blood and I have bled since colposcopy which I understand is normal.  I am taking pain relief for the pain and am remaining as positive as I can be.  I have not told my two children and just a limited around of close family know.  It is not easy to talk to anyone as I am in that "not knowing" period and just do not know what to say.  Any pain I feel now I dread what it can be.  Any advice would be gratefully received