I had sex but the condom slipped into vagina but it was taken out at the same time and the next day I got my periods so I thought I am safe but after a month my next date is passed and 4 days have gone yet I have not got my periods... I want to know am I pregnant or its late because of any other reason??

You could be either pregnant or late. But most likely you are late. If you spend a whopping 3 bucks on a pregnancy test in your local pharmacy you will know the answer.

I had sex but the condom slipped into vagina but it was taken out at the same time and the next day I got my periods so I thought I am safe but after a month my next date is passed and 4 days have gone yet I have not got my periods... I want to know am I pregnant or its late because of any other reason??

You want to know if you're pregnant, and you're asking us? Sure, send me your urine or blood, I'll tell you. Sigh.

We can't diagnose online. Take a pregnancy test using first morning urine. If it's negative, wait a week or two, if you don't get your period, test again, or get a blood test.

That's the only way to determine pregnancy, and frankly, if you don't even know that much, you really shouldn't be having sex.

Good luck.