Bulging Fat Vagina

I’m a RN, but never have been labor and delivery and have no desire to do so (don’t know how you do it if you do, kudos), so I don’t know much about this stuff. Anyways I just went pee and I went to wipe and noticed my vagina was literally bulging. Like i could feel pressure around my vagina. As in my vagina was hard and tougher to the size of the baby’s head. The best thing I can reference too is like very fat tough vagina lips. I have sterile gloves and lube. I didn’t check my cervix bc I can’t reach and my husbands too skidish but I did feel around my vagina just to be sure the baby’s head wasn’t there and it definitely wasn’t. I’m 38 weeks and this is my second and I’ve had BH on and off for a while now (weeks) but nothing serious or super painful. Last time I was checked I was 2 cm dilated and about 20% effaced. Has anyone else had this feeling? So yes i do have swelling and i know that’s normal but it’s like a inner bulge that comes out when I’m in a squatting position. I’m not concerned or anything. Just curious as to if anyone else has had this happened.