Hi Kitty,
It's actually normal for the heart to skip beats every now and then, but us anxiety sufferers just happen to notice it and freak out! Having a nice, full check-up with my doc reassured me that I was the picture of health, so now when I feel something like that, I just ignore it because I know I'm not sick.
As for the aches all over, I get it really bad in my upper body, and it's due to being so anxious that I totally tense up without realizing it for long periods of time, hence the pain. I'm trying massages and yoga and herbal teas, oh yeah, and regular stretching (like every 30 mins, i get up from my desk at work and stretch).
Good luck! Anxiety symptoms can be so frightening, but they'Re not dangerous.
