STRESS,STRESS AND MORE STRESS can cause all of the above that you mention. My wife has costochondritis and I have her doing light excercise with
elastic bands and that helps. you have to take Yoga or meditation class.
first check with your DR. The bands you buy at any sporting goods store.
Also if you can join a Curves it did wonders for my wife.
it's quite normal for a heart rate to be 1oo/bpm i would say it was anxiety if it beats anything up to 120/bpm if it goes over this you would have some sort of heart condition, but i doubt that is the case.
palps can be triggered by many things, caffine, alcohol, multi vitamins, medication, exercise & lack of exercise, or just stress. the best thing to find the triggers would be to keep a diary. good luck kimmie