ok i am on HRT and rarely getting a period. i have recently changed HRT and last month (before change of HRT) had a full blown period - really horrid shock! This month had no period kind like normal really. BUT i am feeling really sick (all day off and on) and my breasts are really tender. i have had unprotected sex with dh. so apart from the obvious, what else could it be? I am all but 50 and far too old!! any ideas??