Urinating problem after getting spayed

My three year old cat got spayed on Wednesday. She was able to urinate the next day after the surgery. I noticed she meowed Saturday morning as she was urinating and she did so again this morning but she didn’t pee. Should I be worried?

Hello - and maybe.  It is possible that your cat has cystitis - which can be brought on both by pain and by stress - and as gently as it is done, speying a cat can occasionally be painful or stressful, as can returning to a (multicat) household not smelling right to any other cats that live there.  If that turns out to be the problem, cystitis can be painful and promote anxiety, so promoting a viscious cycle.  There may be other differentials too, so we would definitely reccommend calling and talking it over with your vet, even on a bank holiday.