So if I'm keeping track of my cycle correctly, my period is late by a few days. My cycle is regular and I'm usually on time. Also, last night I woke up in horrible pain from cramps and I automatically assumed my period was starting but when I woke up this morning, there was nothing. I've had an upset stomach since. Could I be pregnant? My stresses have actually decreased so I don't think stress is making my period late. Any insight would be appreciated.