are there any laws in pa say that stepparents nad grandparents have right to say what goes in my child's life ?

Are you the biological parent? Do you have physical custody?

If so, you're the one that has the ultimate say. The stepparent has no rights and if anything, depending on where you live, the grandparents might have visitation rights.

Nopeee they have no rights at all you're the parent not them. I've looked into this when my sons fathers mother tried getting grandparent rights and all that BS