It's so bloody awful when anxiety grips you. It's hard to advise because you still have to live with yourself. But you have had it checked and given some assurance, but of course you worry because you don't know what it is and it won't go away. Looking symptoms on line is a sure way to more anxiety and tears, we've all done it. Then you don't want to plan things for fear of illness, like your holiday. Many on this forum have health anxiety including me. Always an anxious person recent health problems have escalated my anxiety to levels I can't believe. I can't offer much practical help except the usual like relaxation, supplements etc, but all you can do is plod on and keep busy, exercise and have some faith in your body. In the last couple of days I started a thread on here called "can't cope after recent health scare" and I had many helpful replies from women in similar situations. Don't know if you will find anything there helpful if you read through it. For me mornings are the worse and just doing the basics is an effort. You will find kind people on this forum who will give you support.