Weird STRETCH MARKS!!

TMI but HOLY CRAP I have stretch marks in my butt crack! Pretty weird, yeah. So I'm 32wks and noticed 2 fainted purply stretch marks on my left waist line area and a few on my hips so I decided to examine my back and cheeks. Turned around and noticed the peak of my butt is a little darker than normal so I touched to see if its tender and low and behold they were freaking stretch marks and NOT just on the outside. They're literally in my ass crack. Yes I'm clean, that's what tubs, soap and water is for. But someone please tell me I'm not the only one that has discovered this strange placement of stretch marks. I think I'm more upset that my husband hasn't told me than I am of actually finding them in my ass lmao.