Wah it's normal to think about your body and what it will be like! You've been through a lot and after birth body will feel a bit strange. You'll be sore all over, your stomach will look like a half deflated balloon you may even have stitches down below. But that's all immediately afterwards! And tbh you'll hardly notice.
When I had my daughter I had 32 stitches down below with only gas and air for the pain but I was holding my baby so didn't feel a thing. I breastfed so not only did my uterus (and stomach) shrink down but I was in my pre-pregnncy jeans day 10. Also when you breastfeed your body produces Oxytocin so you're flooded with happy hormones. If you don't/ can't breastfeed your body will still go back to normal. It may take a year it may only take a few months but it WILL. And to be very honest it won't hardly matter to you when your baby is there, they have a wonderful power of just absorbing your every thought.
I was also worried what my body would look like. The day after I got home from the hospital I took a shower and I looked in the mirror and cried. Not at how bad I looked but how proud of it and I was. I was so immensely proud and overwhelmed by what MY body had done I cried, I was so happy and also so sorry to it for every bad word I'd said to myself before I wanted to take back every chubby and thunder thigh comment I'd ever made because it made and delivered my daughter!
Not everyone will have the same experience but trust me you won't feel sad about any of that. You will have a bath and a glass of wine post birth and it will be lovely. You'll also take showers with your bbaby in a bouncer watching you either way it will all be OK.
Oh and my last bit of advice do your kegels everyday! And don't look at your hookah for at least 3months it will look different the first few weeks but it'll go back to normal soon enough!
Good luck with your baby and try to relax these last few weeks, they'll be gone in a flash!!
I think just worrying about your body is selfish. The most important thing should be your baby's wellbeing you can lose the weight besides that you will obviously lose pounds after giving birth. I thing you should enjoy this few weeks left and do something that could help you improve a little your self estime like going to the beauty salon you can take that bubble bath with some sparkling water with lemon . Take a photo session with your husband. I hope you feel better soon. Btw you vagina won't stretch out that's just a myth It can actually be the opposite ;-)