Random Nausea?

Trena
I'm just now 35 weeks and have been getting random bouts of nausea the last few days. I never had morning sickness in early pregnancy so I don't think it's that. It doesn't seem to be connected to anything either. Sleep/ awake, food/no food, movement/stationary. I'm drinking plenty of water. It comes and goes seems like with no reason. Anyone else experienced this? I have a midwife appt today so I'm going to ask her but thought I'd see if anybody had any suggestions for dealing with it. TIA.