Period probs

Ok so my period was supposed to start on Saturday and it's been almost a week and I still haven't had it. Ik thy sometimes periods are irregular but mine are pretty regular. I mean Ik there is no possibility of me being pregnant cause I'm a virgin and it's not like the first few times I've had my period either I've had it for about 3 years now. Also not on birth control. One more thing. I'm having like symptoms of my period like fatigue and acne and bloating and mood swings. So yeah that's all the info lol jw if it's still ok and stuff.