I missed 4 pills (rigevidon) on the last week of my packet Thursday, Friday, Saturday and Sunday! On Thursday, Friday and Saturday I had sex, I started feeling sick during the days and getting light cramps in my stomach on Sunday night I had this light bleed but only when I wiped, it's a little heavier today but could I still be pregnant?

Sure you can... in fact if you had sex at all through the rest of that month your have a much better chance of it happening.

You chance is never zero even if you took every one on time.

But nobody can guess until you are two weeks late for your period.....tests before then would likely be inconclusive unless they were positive.