S.G.
I'm not really sure what normal is, but I can tell you that I have been experiencing the same thing for pretty much my whole pregnancy. I'm 8 mos along now, and I should have bought stock in Kotex, I've gone through so many pantyliners! I asked my Dr. about this several times along the way and he said as long as it doesn't have a foul odor, and isn't causing me to itch, then it's not a problem. It's pretty unappealing though... definitely one of those things I won't miss in a few months. If you're concerned definitely check with your Doc, but it hasn't been a problem for me.