TMI but I normally get bad cramps, lots of acne, sore breasts, lower back pain and digestive issues the couple of days leading up to my period and during. That's how I normally know when it's coming. My period is now 5 days late and I haven't had any of my regular period symptoms. I've been feeling very nauseous in the few hours after I wake up, my skin has gotten clearer, and I've been having very light cramping.