Thanks so much for the replies ladies. At least I know it's not just me.
When it happens, I know I'm not actually going to be sick, but sometimes it's awful. I feel so crappy and tired, and I still have to do all the usual stuff, including mum duties to kids aged 7, 11 & 14.
So far I've found that taking a couple of paracetamol helps a bit, but I'll try and remember some of the stuff I used to do to combat morning sickness. Have some nausea wristbands, so might try those.