Chest starts hurting on the left side and radiates into my shoulder and the top of my back. then starts into my jaw and neck frequent. whats going on?

Although it is: unlikely that a 24 year old woman would have significant cardiac disease, your symptoms are very worrisome. You should seek the evaluation of a health care professional who can order the appropriate tests to determine if this is something significant or not. Don't delay.

Chest pain: Requires immediate evaluation. May be simple, like a pulled muscle, but may also be quite severe, like a heart attack. Don't put this off. IMMEDIATELY be seen by your GP, Urgent Care, or ER. Don't drive yourself. Have someone transport you. GO NOW.

Call 911!!!: Regardless, the cause, chest pain that radiates into your shoulder, shortness of breath and jaw pains always a red flag and visit to the ER is warranted. Do not drive, Call 911.