My period usually starts on the first of each month and it usually last 6 days this month it came 3 days late and was only 2 days then I spotted for 3 days my lower stomack and lower back hurts I've been sick can I be pregnant

Na

If you are having sex, there is ALWAYS the possibility of pregnancy. I would suggest taking a HPT using first morning urine. If that comes up negative then you are playing the waiting game and have to wait until next month's period.

I mean I don't think she is pregnant. If you are pregnant your nipples should turn darker within a week or 2. Also those tests are 99% accurat so if your really worryed you could take one. It sounds to me like you've just had an odd period which is tottaly normal and even more of a likley explanation if you have been stressed. You might have just come down with a bug.