Is it normal to have an increase in vaginal discharge (no odor), to the point where I now have to use panty liners for protection?

Not normal. This sounds excessive. I would definitly recommend scheduling a visit for an exam and testing. There are many causes of vaginal discharge. With a simple exam and testing we can determine the cause and treatment.
No. See your gyn for an exam, cultures and an ultrasound, that is not normal.