Prior to labour starting?
With my last two babies, I did suffer with some pretty horrendous bowel movements in the couple of days before labour, but never felt sick.
This time around - after 2 false starts already that fizzled into nothing - I’m finding myself feeling randomly sick today. I’ve not eaten anything out of the ordinary, and any evening meals over the last few days have been eaten by the DCs and DH and they are all feeling fine.
I just keep getting this overwhelming urge to puke but then nothing comes up - kind of like the early morning sickness days 
I’m probably clutching at straws because I’m just desperate to get her out now!!