Hi and welcome to MM TNM45689
You are far too young to be oestrogen deficient. Cancer risks are very small at your age. If your mother or sister had had oestrogen receptive breast cancer, then that would be different. Womb cancer can occur due to the womb lining building up and, when your mother developed the womb cancer, in those days they probably didn't do routine scans as they would now - she probably had erratic or problematic bleeding which would have been an early indicator. If you are concerned about the womb cancer risk, then having a Mirena fitted, to really protect the uterine lining, and then have oestrogen alongside as Oestrogel or oestrogen patches would give the fewest risks and the least hassle - it'a very good HRT regime. Combined HRT pills and patches can prove a bit more problematic in terms of side effects and breakthrough bleeding etc. Have you discussed HRT with your GP? - they should recommend you have HRT to protect your heart and bones for the long term - at least until you are in your mid 50s. Quality of Life is terribly important and it can take years for meno to settle and unfortunately for some it never does.
Read up all the factually stuff on this site to get clued up - print off the various TREATMENTS (top of this page) if need be to help when discussing with your GP. Don't suffer any longer - get some HRT treatment and get your life back. DG x