hopefully pregnant?!?!

Hey all!! So I had sex on day 2 and 3 of my ovulation days. It ended on Saturday and of course today is Tuesday. These last few days I've had horrible headache (sun/mon) sun I was extremely nauseous almost felt like I was going to pass out. Monday and Tuesday I get nauseous when I eat. So it makes me not want to eat or drink. I've also had some pelvic pressure and crampy. Back aches too. My AF is not due until the 2nd. Are these preggo signs?!?!