l am on bio identical hormones and wonder If bio identical hormones have the same molecules as our own bodies do why do l feel so horrible and manage to get into huge arguments with my partner every month during the 12 days progesterone take days? When l was having my natural periods back in the days before the use of Hrt, l was fine, just fine before l got my periods, never used to be this moody, angry. I really wonder if they are as natural.!!!