ETA: Oh, and if your baby's head is still really high, you may not be able to find your cervix, but it's worth the attempt anyway if you're curious. Although I've only recently been checking for dilation, I have been feeling my baby's head since about 28 weeks.
Thanks for the info Laurie! We tried to check with DD, but we were completely useless and had no idea what we were looking for. To be honest, I'm still quite sure we'd have no idea what we're looking for. I suppose when you've had enough pregnancies and enough professional checks you have a better idea of what the heck you're doing!
I've read everything I can about checking myself and still gave no clue what I'm feeling for when I try. Not just pregnant but when I have tried during my cycles, too.
On a funny note, I recall on one of my birth boards the topic of self checks came up and a crazy lurker appeared and started freaking out that women have "absolutely no right" to check their own cervix. It was the craziest drama ever. Her husband was an OB and she kept on saying no one without a medical degree could touch a cervix. Funny memory.