I Am 73 Yrs Aficacan American Femal Ihad Aheart Attack

i am 73 yrs aficacan american femal ihad aheart attack on 7- 7-16 stents put in my new med started 24-hrs afterwards now iam having sharp needle pains almost every day i tell my cardiolgist he say its nothing i use my nitrostat usually 1 will stop chest pain the medicine they is lisiinpril 2.5 mg 1 a day