Get tremors and shortness of breath and nausea all at the same time been happening quite often. something i should be worried about?

Impossible to say: The symptoms are not specific. See a doctor and have the problems evaluated. Is it possible this is related to chronic anxiety?

Hard to know: Hallie, this could be something as simple as anxiety or a number of other things. You really should speak to a physician in person and describe all of the feelings, when they come on, what helps, what makes them worse, and how you deal with them. Be sure you are eating a good balanced diet, and have someone make an appointment for you to be seen by a clinician. Good luck!