Strange symptoms really early

Anna
So I am at the most 8 DPO, and I am already sick. I've had uterine cramping for three days, nasuea, dizziness, and am exhausted even after getting solid and good sleep. I think it's too early to test, but has anyone else had pregnancy symptoms that early? It's too early for period symptoms, and I know I've already ovulated, so I don't think that's it.