I'm late by 3 days. My boyfriend and I had unprotected sex 4 weeks ago, I've been having cramps for 4 or 5 days now, Been tired, had headaches, and having mood swings here and there. I'm not really under any stress so I don't know what could be delaying it. Am I pregnant or is there another reason for the cramping and no period?

Three days is not really "late" it is very common for periods to come give or take a few days.

Late periods can be many things or just nothing but late.

So wait about another 10 days and if no period, try and pregnancy test.

But of course you could be pregnant if you are havig sex ( no protection 100 percent) and if unprotected makes it much more possible.