Im having heart pain what could that be?

Multiple things: You are young to have heart pain. Anxiety, heartburn and palpitations can make it feel like you are having heart pain, but it is not necessarily your heart. Do you have burning, squeezing, palpitations, feelings of anxiety or panic?

Need more specifics.: For how long? Is it sharp/dull/pressing/heaviness? What brought it on? Any other symptoms with it? Intermittent or constant? Something called "heart pain" obviously worries us doctors, so it would be advisable to get an accurate diagnosis right away, locally or virtually.

Chest pain: There are many causes of chest pain, the heart is but one, intestinal gas and thoracic musculoskeletal pains are very common, anxiety and panic attacks likewise are frequent causes. You should always ask the doctors who see you what they think is the problem you came for and what to do about it.

Lots of causes: I will assume that here you mean the left side of your chest. The commonest cause in your age group is a muscular cause however if you are overweight/smoke/have high cholesterol or a family history of heart disease then you are at risk of heart disease and should have this followed up by your family doctor.