Hi,
Welcome to ehealthforum.
Multiple periods after stopping on birth control can suggest hormonal upset. It is not normal to have more than 2 periods in a month. Report to your gynecologist and get hormonal tests done to look for current hormonal status. You might have to get started on mild hormonal pills to regulate your periods. The bleeding after intercourse suggests possibility of PID (pelvic inflammatory disease), do not take it lightly. Request for a PAP smear test to be done.
Take care.