Hi Debora: Yes, all those symptoms will lessen with time. Your body is exhausted right now. You do need to rest as much as you can. If you feel like taking a nap in the afternoon, give in, but not too long as you don't want it to interrupt your nighttime sleep. I think they say a nap is about half an hour or so. I remember when I first started the healing process I could only plan one outing or event a day. It exhausted me. If I shopped for groceries that day, that was it, no other store. In time with rest and good nutrition I got stronger. It did not happen overnight. Took a few months for me. I had exhausted my body that much from too much adrenalin rushing for too long a period of time, with very bad sleepless nights.
On the days you can't eat, nauseus and all, have you tried ginger mint tea? It really works for nausea for me. I would suggest you also have at least some soup and crackers, or a couple of scrambled eggs on the days you can't eat. Maybe a beef/chicken broth. Some people like the meal replacement drinks such as Ensure or Resource, just for those days when you find it difficult to eat.
And if you feel like crying - go ahead. I found that a great stress reliever - I used to go and cry in the shower so the kids didn't hear me. lol. Have you tried a hot bath - as hot as you can stand it and relax in the tub. You could put some soothing music on, light a candle. You need some "me" time. It's time to pamper yourself right now. Give yourself permission to take care of yourself. If your best friend was crying and upset and frightened as you are at times, what would you do for her? You deserve as much love and attention. You will heal with time and the knowledge you get from CBT program will help you understand what your body is going through and why. It will help you change those negative (sometimes scary thoughts of illness) to positive thoughts. You will learn about yourself, you will learn your own triggers and you will learn what works for you and what doesn't.
I know the symptoms can be frightening but if you understand that they are coming on because you are anxious, you will also understand that as you calm yourself (and you will learn how in the lessons/chapters) that they can also recede just as quickly.
There are many coping tips on the site from the members. Have you tried reading past posts? Lots of information and inspiration.
Keep posting and let us know how it's going. We care and we've all been there at the beginning.
Sunny