Gravity vagina?

I woke up this morning and it seriously felt like my vagina was falling off. I'm only 34 weeks 2 days, seemed a little early for the pelvis lightening. I'm also a FTM so I've never done this before. I have an appointment tomorrow afternoon and will mention it to my doc. Have any of you felt this? Is this normal?? I feel fine when sitting, but when I stand I feel like it's gonna fall off! The shape of my belly doesn't look lower, I'm still carrying kinda high. Any advice/tips are greatly appreciated!!