Pre-Interview Jitters

I have been called back for a second interview for the Job I applied for.
The first interview was nerve-wracking enough - but I have now been shortlisted (Yay!) for the Job and they want me back for round two.
However, this will be the final interview - should I then get the job, I will be required to sign a CRB check and take photo's in for my I.D card. Then it's training.
It's hard work and I'm not sure how my system is handling all this.
Today (Well all afternoon/evening), I have been feeling rather unwell - I'm not sure if it's nerves or what, but I have never felt this way before. My entire chest is feeling very painful and the top of my stomach too, I also feel extremely lethargic and just want to sleep, however, I can't - until now. If I sleep too early, I will be up too early and it will ruin my Interview. My first interview, I was exhausted through no sleep the night before and thought I had messed up, my mind would work quickly enough because of the tiredness when they was asking the questions.
I am hoping upon hope that I feel better in the morning - or I will have to cancel the interview. I am in so much pain with my neck, stomach and chest at the moment that I may end up actually having to go to the Doctor's, or I never thought I would say this - A & E. I will see tomorrow though, for now - I have to try and stop worrying about it - How do I do that? I think about my next shopping trip. Oh dear!
I do need to return a few things to BHS though - I have changed my mind, upon trying them on at home I don't think they are worth paying the full price for them (they do not look anything special on, for the prices I paid), but hey...it gives me an excuse to go back to the shops and choose something else - and you never know what bargains I may find again.
I heard from a very special friend of mine last night - and he wished me luck for my interview tomorrow and hospital appointment on Thursday (Yep, the day after the interview! - Which is probably why I am feeling so ill)), which was so lovely. I haven't seen him for over 6 years now and miss him dearly, even though we speak on the phone and write letters to each other, it's not the same as being with someone in person, Hopefully I will see him at the end of the year though.
I also saw a friend of mine today, we have been friends on and off for almost 17 years - Was really lovely to catch up with her. She has invited me to stay at her new flat for the night for a girls night in, I don't know how to tell her No though, it feels very rude, but I cannot explain the reason, but I suppose I will have to - there are only so many 'excuses' you can give someone. Ahh well, that's something for another day, I have more important things to concentrate on at the moment.

Watch this space (re; Job interview: Part 2)...