I stopped taking the contraceptive pill two months ago as I kept having break though bleeding.

Since then I have not had a proper period, just random bleeding and unusual vaginal discharge - brownish / orange colour.

I have also taken the morning after pill three times since I came off the pill.

The discharge I am getting always happens when I have intercourse and lasts for a day after and then goes.

I haven't had a regular cycle at all since coming off the pill.

Does anyone know what this could be?