Maybe pregnancy?

Before I start let me tell y'all I have irregular periods sometimes, so whenever I miss my period, I don't freak out. My period has been regular so far this year. Besides now. I had sex on my fertile days at the end of February, and my period was supposed to start Thursday. It hasn't yet. My body has been acting weird, but not weird enough to were I think I'm pregnant. I feel nauseous at points, but I don't get sick. I get aggravated easily, like I about cried last night for how aggravated I got. I cry easily as well (but I've always been emotional). I felt dizzy last night. I've been over tired (I just started a new job so I figured this was why). And I'm hungry alllll the time. And I've been having cramps, but I thought it was AF....