Anyone else expected this b4?

Hello everybody

I’ve had sex with my man on the 1st, 2nd and last day I was ovulating. All which was like a week and a half ago max. I felt fine all week up until last night where I started to feel sick, like I was about to vomit. My breasts were painful and killing me (my breast hurts during my period but this pain felt 10 times worse) and I’ve noticed a vein, like I could really notice it. I’m not sure if that’s normal or not. But my period is due in 9 days. And I know it’s still early to take a test. But yeah I mean, it’s possible right that I could be pregnant?