When I was pregnant with DS1, I had arvo sickness (3o'clock chuck as I would call it). It disappeared around 30 weeks, but then reappeared around 34weeks - to which my OB said was quite common for the last few weeks with hormones and everything moving around. I also had the bad heartburn from the 30 weeks (yeah, got rid of the arvo sickness only to be hit with heartburn, then had both from 34weeks til DS1's birth at 37w1d - thank goodness he decided to come early...lol!)

Hopefully it was just heat related so you can enjoy the next 10 weeks of your pregnancy

All the best,