im 14 and recently I've been getting some stabbing pains through around where my heart is, they only last about 1-5 seconds but are happening quite frequently, I also have a bad cough. should I be worried?

diabetes and heart disease does run in my family, and my father passed away from heart disease when I was young so I very just worried that something could be wrong with me.

 Can anyone help or tell me what it might be, or Just give me advice?

thankyou xx