welcome to health care magic
Thanks for your query
Your general practitioner told you that it is cervical polyp
can visualized by cusco's speculum which will not be available at your GP..
You have previous history of CIN3 which was removed..
After that you had post coital bleeding..Your pap smear
is negative in december..
It should be checked once in 6 months..
Consult pathologist and have your pap smear,,the report will tell you what is it..
then consult your gynecologist and she/he will decide further treatment.
Hope you understand my suggestion