Is a running nose a sign of pregnancy?

The increase in progesterone when pregnant can cause something called pregnancy rhinitis. That was one of my first pregnancy symptoms, I got it right away. I'm 36 weeks along and I've had it the whole time. I haven't been able to even breathe out of my nose this whole time. My nose isn't as runny as it is just plain stuffed, but everyone is different. I've been more prone to sinus infections as well. Sounds like it could be your month. Good luck to you.