I understand your concern.
Well as you describe,these are not interlinked.
You can try some self care measures for few days to see if they respond.
Drink plenty of fluids.
You can take OTC cranberry juice and AZO tablets for 3-5 days.
Also apply OTC Bacitracin ointment on bump for 3-5 days.
Take OTC Motrin and metamucil.
Eat fibre rich diet.
If burning sensation still persists then urinalysis should be done to rule out urinary tract infection.
You can avoid spicy,fried foods for a while.
Wear loose cotton undergarments.
Most likely you'll be fine.
Use reply to let me know if you have further queries.
Please to not forget a positive rating.