Symptoms?!?💖😍💖😍

Okay, so I have no idea when I last ovulated. I started what I thought was my period on the 18th, lasted three daysdays and ended the 22nd. But it was very very very light. Mostly only saw anything when I wiped. But now I am experiencing fatigue, nausea (SO had morning sickness this morning, puked) I'm running to the bathroom every hour, headaches, slight stomach cramps, lower back pain, and my nipples have bumps around them which I have never had before. They also feel a lot fuller. Any ideas??