Thanks for the query.
can cause menstrual irregularities like amenorrhea
, breakthrough bleeding
These are common side effects of hormonal
But if you are having repeated post-coital bleeding, better to get examined once to rule out other possible causes like cervical erosion etc.
If the spotting repeats or increases you can go for symptomatic treatment.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429