3 Days Late

Okay so I was supposed to start my period on Thursday. I've been having funny feelings that I was pregnant because of the random sickness I experienced and I got a yeast infection(which never happens). I tested a day before my expected period=NEGATIVE and tested again when I was one day late which was also NEGATIVE‼️ I'm frustrated and tired of waiting on a period that doesn't seem like it's coming. I've been having light cramping but I can usually feel my period about to start. So frustrating!!  HELP‼️