Is cramping in the stomach and slight twinges in the crotch signs of early pregnancy?

i also would like to add that i had unprotected sex with my hubby when i believe i was ovulating. my hubby did not ejaculate in me. but i had a lighter and shorter period too. it is about 11 days until i am supposed to start and i have had cramping in my stomach and weird twinges in my crotch since the 24th of april.