maybe it's just that u anticipate too much to get pregnant, causing your menses to be irregular. wait for few days more. if unsure go to hospital for blood test.
No way can one know unless you do a pregnancy test and of course high chance of getting pregnant when you're sexually active lah w/o using any protection
Maybe u wanna try 5 to 7days later and watch for symptoms like giddy, nausea or change of appetite
Hi, You can try to take the pregnancy test in a couple of days
my meses was late for 16 day