I started on Evorel sequi and put a estrogen only patch on last Thursday. I am feeling like hyperventilating, I can control it by focusing on my breathing and it's not all the time but several times a day since Friday. I am aware this can happen with low progesterone and could be linked to anxiety, but I don't feel particularly anxious apart from the breathing. Do I need to go to A&E or can I wait until Tuesday to contact the gp? And should I put on another estrogen only patch on Monday or a combi patch? I have previously been using biovea estriol and progesterone creams, both continuously because I couldn't sleep without the progesterone. I'm sure some of you are very knowledgeable about hrt, thanks in advance.