Recovery after having cast removed for broken ankle?

Hi everyone,
I broke my ankle 8 weeks ago, and have been in a series of casts since the accident happened.
For the first 3 weeks I was in a heavy duty plaster cast that came upto my knee. The remaining 5 weeks were spent in a more light weight colored fiberglass cast.
The cast was removed today, but the fracture clinic was so busy today I basically just got shoved out after it was removed.
All i was told was to start walking again, and use my crutches if i still need them.

The problem is my ankle still quite sore, it feels really stiff and i can’t move it. It’s not sore to try and move it, just when i try it just won’t move.
There is no way i can put weight on it without a lot of discomfort, and i really can’t see myself walking on it.

Has anyone had any similar experiences?
Are there any excersises i should be doing before i try to walk?
I’ve not been referred for psysio or anything, and I’m a bit concerned.

Any advice, or shared experiences would be appreciated.

Cheers!