Hi Ally,
I don't know if you would call it flushes but I have been really cold too. I am almost 12 weeks preg and it is slowly stopping. Last week it was a hot day and hubby was wearing shorts and a singlet top around the house. I had a long sleeve top on, a jumper over the top and track pants on and I was still cold. It wasn't really a flush because it lasted for most of the day. Now that this is slowing down it has gone the other way. One minute I will be freezing and the next I will be too hot. Strange. I also did not get cold with my first bub but this one has definately made me cold. So I think I know what you are talking about.