Hi there
Thanks for taking this bunny in and giving her a good home.
We are a forum of pet rabbit owners/discussion so our knowledge on pregnant rabbits etc is limited. However if she is pregnant and looking quite large around the middle, then she may very well be due to give birth soon. Rabbit gestation is 28-31 days, so if she doesn’t give birth in that time from the time you got her, then she isn’t pregnant. On the chance she may be close to giving birth, I would offer her a nest box, an upturned plastic tub would be best with a lower edge on one side, otherwise a cardboard box will suffice. It needs to be big enough for her to get in and out without stepping on the kits. The sides need to be high enough for the kits not to crawl out of when they are very young, at least 5 or 6 inches I would think, especially once you pop some hay in for her to nest with. If she start using the nest box as a litter box, clean it out as often as possible until you are sure that she isn’t pregnant. Most does only pull fur and build a nest the day of or day before they are going to give birth.
In regards to food, so may just be stuffing her face and being a pig, but if she’s pregnant it’s probably worth continuing to give her a bowl full of pellets to ensure she’s getting all the nutrients she needs and maintaining weight well. Rabbits in general should eat at least as much hay as a bundle the size of their body or more every day.
Unfortunately it’s a sad truth that many pet rabbits get dumped when either a doe gets pregnant or has a litter of kits and the kits get dumped as well
Also please be aware that when she does have kits, that is against the forum rules to post photos of kits on here that are under 8 weeks of age. If she has kits and you’re having trouble with her feeding them or the kits being unwell, I also suggest you try the forum rabbits online. They have a breeding section there and may have better advice regarding care of very young kits if the doe is inexperienced. http://www.rabbitsonline.net/forumdisplay.php?f=20 While we help as much as we can, especially in rescue situations, our knowledge compared to those who have lots of experience can only go so far 