Ok, first off, I check my own cervix, my OB, m/w and doula are fine with me doing so

I have checked my cervix and through it, I can feel a fuzzy, mucousy, hard head. I know bub's head is right there but shouldn't I be feeling an amniotic sac as well, cushioning the head? Have perhaps my waters gone without me knowing? I could feel my waters with DS2 but not with this one. Or maybe the amniotic sac and bub's head are just that close...but then why can I feel the fuzzy stuff on the outside?

I am seeing my OB tomorrow and will ask him the same and also get him to check.