thanks for using health care magic.
Its most probable you have a urinary tract infection
Sexual intercourse be it by fingering predisposes to
urinary tract infections due to the proximity of the
vagina to the urethral orifice.
What you need is to do a urine analysis and culture for
specific antibiotics or be put on empiric antibiotics such as
or cotrimoxazole and observe evolution.
All these your doctor should do including the follow up.
Best regards and hope this helps you.