I can't eat a healthy diet . i either binge eat for hours to days or starve myself for weeks . is this an eating disorder ?

Yes: This is not normal eating habits. You should speak with your parents if you are comfortable talking with them. If not , please speak to your primary care physician. If you are not comfortable with your parents being in with the doctor, ask them to step out. This needs to be evaluated. Take care.

Yes: We would need more history to classify it but what you're describing is definitely not normal. Please see a doctor as soon as possible.