A strange feeling

Over the last few days, I have had a really strange feeling that I cant even really explain. It is similar to how I feel when I am really anxious about something or if I feel guilty about something. This is really strange as I dont really have anything in particular to feel anxious or guilty about. It is also similar to how I used to feel leading up to a test or exam when I was at university or if I was about to swim in a race when I was younger however I really dont have anything to be nervous or worried about either.

It is causing me to get a tightness in my chest or a knot like feelling and it is also making me feel on edge all the time. It almost feels as though I am permanently on the verge of a panic attack however it just isn't happening. Despite this I am feeling quite positive and happy about everything at the moment and am not letting this strange feeling ruin my days. It is almost as if I have done something wrong but just dont know it yet or I have some other reason why I should be feeling anxious. Does anyone else have any experience of this type of feeling?

It really is strange and I cant explain it any better then I already have as I am even really confused by it. I just thought perhaps some of you may have experienced something similar. Usually when I am feeling anxious I can identify exactly what it is that is causing my anxiety. Perhaps this however is just general anxiety I am experiencing, for no particular reason at all. I am glad that I am staying so busy with work at the moment as I feel as though if I wasn't as busy, I would be more likely to let this strange feeling stop me from being my happy and cheerful self.