Thanks for your query.
Cocaine can cause damage to heart (observed in long-term use or overdose), Myocardial infarction( heart attack
(rhythm disorders), and cardiomyopathy
(increase in heart size).
You may have to undergo investigations to assess the function of heart.
After investigations further assessment can be planned.
Hope I have answered your query. If you have any follow up queries I will be available to answer them.
Wish you Good Health