name in the subject gets your attention - huh?
Yes, all your concerns are rational esp. for a first time. Luna drove me nuts for months. Can you take and post a picture of her? Maybe we can determine something from that. Is she still drinking? Don't worry about food (not much room in that belly) but water is important. You could mist her with hot water (cools when it hits the air) from way above so it just lightly falls on her - unless this would disturb or stress her.
I agree that you shouldn't disturb her. If she leaves the pot and you can put some of the mix on top of the soil go ahead.
How far is your vet from you? Depending on how things go you may want to get an x-ray to see what's going on inside but I would wait to see if she lays on her own.
Try to give her privacy. Keep a towel or other covering and just peek ocassionally to make sure she is OK. Is the pot with the soil in it close to the ficus? Luna surprised me when I found her in the laying tub since she had given little notice before hand.
How are her temps? Is she warm enough? yeah, pic of her and her setup might help.
a very empathetic,
lele
-----
0.1 veiled - Luna
0.2 house geckos - Gaia & Tia (both MIA 
0.2 felines - Kyndra and Líta
1.0 African Clawed Frog (for summer)
0.5 Mad. Hissers (for summer - all girls, no little ones, whew!)