So frustrating...

I’m 3 days late and had a terrible migraine all day yesterday. My boobs and nipples have been so sore and sensitive like this whole week and one day they hurt so bad without even touching them. I’ve had some light cramping here and there and I thought I was gonna start but haven’t yet. Last cycle I was 2 weeks late and when I did finally start my period I had cramps so bad I wanted to go to hospital. Why am I so irregular all of a sudden I usually never am!!