Hello and thanks for trusting me to help you. I am a board certified consultant with over 30 years of experience.
Well as you describe,possibly you have either irritated it or it can be anal fissure.
So you should try OTC Prep H ointment on it.
Also do warm sitz bath with betadine solution.
You should use moist toilet paper to wipe.
And take metamucil.
You can use witch hazel numbing pads.
Take OTC Motrin and Zyrtec at night.
Hydrate yourself with plenty of fluids.
Avoid straining during bowel movement.
Avoid prolonged hours of sitting.
You should see your doctor if it persists more than 5 days.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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