Hot flashes?

Jessica • Together 8 years and got married 08-08-14. Expecting baby #1 !!
I'm generally warmer than normal now that I am in my 3rd trimester (31w) but nothing I can't handle (I just stopped layering my work clothes). But lately I've been waking up in the middle of the night sweating all over in only what I'm assuming is a hot flash. I've been going to bed naked with just a top sheet and thin comforter but still find myself getting too hot. Anyone else???