I had my period, and three days later I had intercourse. The day latter I had sppoting

i had my peiod on December 7 to December 10. 3 days later on the 13 i has sex and a day later on the 14 i had spoting but on the 15 i didnt have spotting but then i had spotting on the 16,17 and 18 of December and now i feel like im leaking from my Vigina. What could it mean?