What does it mean if my cervix is medium high slightly open and somewhat firm? With creamy discharge?

Cervix. There is very little one can tell about their own cervix on exam. The mucous can be tested for its viscosity and tackiness (spinnbarrkeit), but not much else is very meaningful.
See a doctor. We don't normally describe the cervix this way. You need an evaluation by a physician. Vaginal discharge has many causes, including infection.