Dilated?

I was having some "alone time" earlier and I think I felt that I was 2 centimeters dilated? I've never felt it before and I didn't exactly stop what I was doing to feel more because I didn't want to hurt anything or break my water but I tried again after I took a shower and I couldn't feel anything. It definitely felt like pursed lips and I could fit 2 fingers through but I'm only 30 weeks pregnant. Is it too soon to feel that dilated? Anybody else able to feel their own dilation?