ANxiety can really muck with you. The best advice I can give you, which is often very hard to accomplish, at least at first, is to accept logically and emotionally (that is the hard part) that anxiety affects more than the mind but the body as well. Your whole body can be dragged around like a puppet from ole BEASTY (your anxious thinking mind). You have to accept, also, that anxiety is not an on/off switch. Just because you may not feel consciously anxious doesn't mean your body won't react. It takes a while to get ramped up and it probably takes twice as long to get calmed back down. So it can take months of therapy (meds if you are open to that), exercise, hobbies that completely take you away, self-help books, forums to get yourself back to a normal anxiety level. Remember that everybody has anxiety to a certain extent---life is stressful. But it only becomes a disorder when it consumes you.
Here is a link to the 100+ most common anxiety symptoms:
http://www.anxietyzone.com/index.php/topic,17050.0.htmlPerhaps if you can see logically that anxiety is a powerful foe, you will more easily accept that it can muck with you all over the place. Once you aren't afraid of the physical symptoms, your anxiety will go down a bit. Actually when I get physical symptoms now, I look at what is going on in my life that has me stressed. Sometimes it is just a random thought or sometimes it is a squirrely life event. It is a bit easier for me right now to see the triggers because I'm not in the snowstorm, so to speak. If you are living in a steady stream OR have beenfeeling anxious, like you for 4 months (honestly its probably been longer

4mo may be just when you started noticing it), then your body/mind has it's anxiety button stuck in the on postiion. So likely you don't even need a stressor or trigger to set off a panic or physical symptoms. However you can change this. It will take some time but it can be done. You may always have to be wary of anxiety rearing its ugly head BUT once you have the tools, it won't be able to drag you around quite so easily.