I had this last week at 35 weeks as well. I think it was a combination of being exhausted and sleep deprived and also my body just getting ready to go into labour. My first was early ish (37 weeks) so I expect to go similarly early this time probably. I think it was my body starting to get ready for labour. It can be perfectly normal to get nauseous, dizziness and exhaustion in late pregnancy that feels exactly like morning sickness. It's the same hormones rising prior to labour. And the cramps are often baby settling in and getting ready as well. It's always worth getting checked though. I felt so miserable one day I did take myself down to the day assessment unit, but all checked out perfectly.