I have double and blurry vision for years but I don't have any other problems in my eyes I happened when I relax my eyes could it be ms?

Unlikely MS. Focal problems involving eyes in fashion you describe is very unlikely to represent presentation of MS.
Very unlikely. You likely have a phoria. This is a tendency for the eyes to become misaligned. You overcome your phoria most of the time, but when you are tired, you cannot. When this occurs, the eyes go out of alignment and you experience blurred and double vision. Glasses with prism in them will make this less frequent. Discuss this with an eye doctor.