You need to be scanned to see if a new cyst has formed. It can happen.
or something wrong with the operation which is only recently manifesting iteself.
You also need to be checked for infection inside (not just a uti)
Call the gynae ward staff , there should be a phone number on the discharge letter from the hospital. They will propbably want to see you themselves to check up on the sitution post op.
It isn't normal to be in that much pain after a cyst is out. Something is causing that pain.
If you are clear of all infections, and there's no sign of cysts, then it has to be something else they need to be looking in to.
Call the the gynae ward right away and discuss it with a senior member of staff there.
Failing that- visit A&E. It could be an emergency and to be sure it isn't, the hospital need to be checking you out. They have the equipment on site which the GP doesn't.
I don't want to alarm you or cause you to worry more than you already are, so the quicker you get on the case and push push push for investiagtions the better.
It might simply damaged nerves than haven't settled down, but it could just as easily be something else too that needs attention pronto.