I had sex 2 days before my period and took the postinor 2 pills. My period came as normal. Then the last day of my period I had sex. I took the postinor pill but prior to that I saw a whitish discharge on my underwear a day after and a few hours after I saw blood. However it has been 5 days now and I'm still bleeding. What can be wrong with me? Can you please help me?

(N.B. I stopped taking birth control pills about a few months before because I realised my period came very light and I never really paid careful attention with my cycle.)

I'm 29 years old and I'm from overseas - Trinidad and Tobago just desperately looking for answers.