Im 16days late of my period. And I've had unprotection sex!!

Have you taken a HPT yet? If not, that's the first place to start. Remember to take it using first morning urine.

Pregnancy is possible.

Are you? Don't know. We can't diagnose pregnancy online.

Try a pregnancy test, use first morning urine, and follow the directions exactly. If it's negative then wait another week. If you still haven't gotten your period then test again. Keep testing until you either get your period, or a positive result, or see your doctor for a more accurate blood test.

Good luck.