Hi and I’m sorry you’re not feeling great. Have you spoken to your GP about the mood swings? I feel like you might benefit from seeing an endocrinologist, so that you can just make sure all of the hormones get covered and checked. It could be menopause related, it could also be cortisol/adrenal. I have had mood swings and anxiety related stuff during peri but probably not quite as up and down in one day as yourself. I’m sure you’ll get lots of good advice and support from others here soon, I’ve had lots of help here myself. Does exercise help you? You’ve probably addressed your diet and lifestyle anyway, but try to avoid stimulants like coffee and tea, sugar, focus on lots of whole foods, fruit and veg and even just regular walking would be a good thing while you feel like this, but any exercise you enjoy is good. I also like meditation and relaxation apps, starting your day with something like that. If you are feeling very frightened, please do discuss that with your GP as you don’t want to feel too unwell or scared too long, there may be other options they can discuss with you.