Early sign of pregnancy?

So, I was supposed to start my period today & still haven’t gotten it. But I’m going to wait until a week after my predicted cycle to take a test. Anyways, today I have been SO HUNGRY. Like my tummy has been growling since I opened my eyes. But every time I try to eat, the food suddenly starts to repulse me 🤢. Currently staring at my favorite lo mein noodles that I’ve been craving all day & I can barely get one bite in before getting grossed out. The same thing happened with breakfast today. I’m wondering if any other mamas had this experience before finding out they’re pregnant?