14th September I had sex with my boyfriend. we used condoms. and nothing happened bad. (3 or 4 times I used Postinor2 few months ago. as I can remember the last time i used that tablet is 12th Aug.) this time I didn't take any medicine after having sex. my period was about to happen.but now it's late. now I got a little pain in lower part of the stomach. there was some white and thick thing inside of the vagina (before having sex) and now it's not thick and has no color. (after having sex)
do that means my period will happen soon or iam pregnant? why my period is getting late like this?