My period is 4 days late, I took one pregnancy test after being 2 days late and it was negative. My cycle is extremely regular at 27 days, I've never in my life been late. 2 days prior to my expected period date I began having a stuffy nose and headaches, now I'm having slight nausea, fatigue, also I keep feeling as though my period has started but it's always clear/white odorless discharge. The only other thing I noticed was at 1 day late I had what I can only describe as a bubbling feeling where I would normally get cramping.