I would like to confirm if the bleed was from the vagina or due to trauma to the anus or due to trauma to the external genital area.
A one time single episode of this can be safely neglected.
If you think it was a vaginal bleed, then a per vaginal examination need to be done to rule out any tear or erosion or any other local trauma to the vaginal vault
Please take a course of good analgesics for a few days like tylenol
and take adequate rest.
You should be fine in a week's time.
Hope this helps.