WHATS IN THERE?!

I’m 37+5 weeks pregnant and I’m sitting in the bath tub and I inserted a finger inside of myself for the first time in a long time to see if it felt different and boy does it. It feels totally different and I could feel something hard as a rock in there! Is that my babies head?!

UPDATE: I do not need to be scolded for putting a finger inside myself. Thanks. 💁🏻‍♀️ My finger was clean and less than 2 inches inside. I did not even insert far enough to touch my cervix. I am fully aware of the anatomy of my own body. Just wondering if the rock hard thing I felt could be babies head and if not then what is it?