This could be a medical or a behavioral problem. The behavioral aspect of frequent urinations could be stimulated by any type of change in your cat's routines, such as new brand of litter, new location for litter pan, a new pet in the household, human visitors, or some unknown factor. If she is not spayed, is she going through a heat cycle right now?
If there aren't any changes at all to your cat's routine, then she may very well be experiencing UTI. Has she had this diagnosed in the past or is this a first time for showing the numerous attempts to urinate? Either way, you would be ahead of the game by having her examined by your veterinarian. A urinalysis would be beneficial in determining if UTI is the problem. You also need to make sure that there isn't something else going on that might require attention, or be worse than the actual UTI.
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