Thanks for the query.
As you took the pill within the recommended time, it will possibly give protection towards pregnancy
But your menstrual period may alter because of the pill.
The pain can be due to dryness in the vagina or it could be due to some local infection or lesion.
You maintain abstinence for few days, so that any local abrasions etc will heal. After that you use some lubricant during intercourse. If the pain and bleeding repeats after this also better to consult gynecologist once and get examined.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429