I was just sitting on my couch and my heart start beating hard and fast and I became very tired like I've been running my I have palpatations everyday?

Tachycardia. See your doctor. Depending on the frequency of symptoms , further evaluation with a montior 24, 48 hours or 30 day can be very helpful in evaluating your symptoms.
See an MD. These symptoms should be evaluated by a physician as soon as possible. If you have the feeling of a rapid heart beat with shortness of breath or chest pain you should get to a doctor right away.