Whenever we visit my Husband's parents. My mom in law always took control of my son. She feed him, napping, etc. It seems like i don't have permission to touch my own son. I know she might missed her grandson but i feel powerless. What should i do?

If I were you, I'd relish the short break. Your mother-in-law misses her grandchild and she probably wants to give you a break as well. Don't take it as a negative thing -- rejoice that you have a few moments to breathe and know that your child is in good, loving arms. Plus, it's not every day you visit your in-laws right? Let your son's grandmother spoil and dote over her grandson for a short while while you chill and relax :)