Not so sure

Really how do you know if chest pains are from a heart problem or just anxiety. I've been having chest pains daily for the past few weeks and a tightness in my throat and pain in my left arm. I do have some risk factors heart disease runs in my family,have several members with heart problems .I have high bp and have had it for years. I've made an appt with a heart dr. but i'm wondering if it's just anxiety and not sure i should keep the appt. I could go on and on but there's no time at the moment. Thanks for reading my post,