Strange Cycle and Confusion-

My husband and I have been TTC for 6 months. This cycle has been extremely strange. At brunch the other day I started out starving and then simply could NOT eat when food arrived. My husband offered me an olive (my fave) and I turned it down and had the strangest rush of emotions. I almost burst into tears in the middle of brunch. The rest of the day I felt like crying. I have felt strange for the past week or so with nausea and odd cramping. I usually get severe cramps the day before my period starts, but I have had no bad cramping at all. Just a strange twinge feeling every once in a while. My period arrived 4 days early. I am always consistent with my 28 day cycle. I have never started early. It was extremely light the first day so I thought maybe it was implantation bleeding and of course, got very excited. It has been a pretty light period compared to normal and the color has varied a good amount. My period has suddenly stopped after just 3 days. Again, I am always consistent and usually bleed 5 days straight. Has anyone experienced this before? Not entirely sure where to go from here.. does this sound like my body just started a period and maybe it’s being weird because of stress? Or should I be testing right now? Period should technically be starting tomorrow, but again, it seems to have come and gone.