12 dpo -nausea

12dpo, negative pregnancy test. But I’m experiencing nausea that’s different than usual. Sort of like motion sickness in a way. Like slight headache, cold stomach, indigestion and nausea but not enough to actually get sick. I had slight cramping yesterday and calendar says af is due 12/4 which is 14 dpo but i got af 11 dpo last cycle. Is this normal pms symptoms or maybe something more?