I am thinking it might need a fluid change. Any one went through the same problem?

You might want to consider taking it to a specialist and having them look at it. Could be something small, or maybe not.

If its an auto transmission you most likely need a rebuild or replace. Mine is currently being ripped out as we speak and being replaced by a manual tranny, it was shifting so hard I have to replace the tranny and motor mounts cuz it broke em all...OIt'll be nice to drive stick again :)