Little red spot side of tongue on sat, looked gone sun, now tues same spot now white, same size. worry? see dentist? grind teeth at night, anxiety.

Yes see a dentist: Anxiety also causes in some cases tongue thrusting along with bringing the teeth at night , that can cause the minor cuts at the tongue edge that turns into sours later on . You should see a dentist to have a night guard made for you and seek other solutions like selective grinding of teeth to meet properly.

Must be seen: Can't tell without seeing it. Call your dentist for an exam.