Hi Jess25~
I first would like to say I am so sorry to hear of the loss of your sister and brother. Losing a loved one is tremendous grief and causes you a tremendous amount of anxiety as well. It sounds to me like you are experiencing panic attacks, as well as anxiety disorder. I would do as others have mentioned go to the Doctor's get a full physical exam to put your mind at ease, and if these feelings you are having is due to anxiety then seek out help for your condition. May I ask have you had any counseling to deal with your losses? Sometimes we hold in our sadness, our fears, etc and this builds up into a massive amount of anxiety and panic.. Believe me I know first hand, I've done it myself.
There are wonderful supporters on this board so feel free to post your questions and thoughts no matter how strange they may sound! Keep us posted Good Luck! (BTW) There is a support group board for Grief & Loss located on health boards you may find this board helpful as well just thought I'd mention it..

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