Since the topic of intentional breeding is prohibited on Binkybunny, many members, including myself, are not knowledgable on the expectations and complications expected with pregnancy unfortunately.
If it is bloat, you most likely only have hours to get to a vet. Bloat is very severe and life threatening. If to the best of your knowledge, you believe your rabbit needs immediate medical attention, I recommend being direct with your parents, like I know more about rabbit health than you and if I listen to you and do nothing, my pet is going to die.
I dont know besides nesting what symptoms you listed might be expected to coincide with pregnancy or labor, or the timeline for labor in general, but when did the gas-centered symptoms begin and when has she last eaten and pooped?
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.