I Have Been Diagnosised With Heart Problems. I Take 40

I have been diagnosised with heart problems. I take 40 mg of lisinopril, Im on steroids 40 mg for five days because of my asthma and allergie problems which I haven't had a nights sleep in over a year because of. Now since I woke up this morning I keep getting sharp pains in my chest that hurts. I don,t know if somethings wrong or if I might have indigestion which I doubt. What do u suggest I do?