I'm a 44 years old woman and having chest or muscle pain on my right side of my chest it been going on for two years what are cause it and should I go to the doctor

Yes, you should seek medical advice. It is dangerous to diagnose via the internet.

Right side is not as scary as the left but women are well known to have atypical chest pains and can present much different than males. As long as this has been going on have you brought this up with any MD along the line. An EKG could answer a lot of questions in a hurry.