Hello Donna-paul, I am wondering if you have seen the menopause Dr as yet and what the outcome may have been? I think I may also be having an allergic reaction to HRT. Like you, never had the problem before HRT, my symptoms are burning tongue, lips and extremely dry mouth. Now on my third type of HRT and like you, thought it was likely to be the progesterone, but now I am thinking it may be the oestrogen as have not started the progesterone yet. There seems to be a link between oestrogen and histamine, which may explain both of our symptoms? Extremely disappointed, as 3 weeks in HRT was starting to work well for me. 3.5 weeks in symptoms started. I also have ME/CFS, so as we compromised immune systems, is that a possible link too? I have spoken with my Dr and am going Vit C and fruit free for a few days to see if symptoms die down, as they shot up again when I took my Vit C powder, it was immediate. Also wondering if the gel might be an option as suggested by Salad as it may be a reaction against the actual tablet (elleste conti and now elleste solo). My poor head is struggling to keep up with it all! I would love to hear from you.