As Suzy predicted, the next week is something of a frenzy of girls wanting to caress Beckie's belly, and to be swallowed and digested. In fact, Beckie even digests a couple of the teachers. [Less pleasant is the discovery that the school is used to cases like this and they have ways to make sure you still have to do your homework.] You are rather envious that Beckie is getting the most time with Rickie. But Rickie is still able to do two at once and so you get some, and if you are hardly the innocent virgin of a few days back, you still have some inhibitions and it feels a little better if he isn't on you constantly.
But the last lass is now long digested and nobody has volunteered to replace her. In fact, nobody has even caressed Beckie's belly in hours. From what the other girls have told you, this is normal. The excitement of the new pregnancy wears off, and Beckie [and you] is not going to be getting any more free feeds. Normal, but not so good for you. You hear Beckie and Rickie discussing you being birthed. You don't get the full discussion, but you are pleased to hear you are getting out.
It is about an hour later that you start. Beckie's womb starts to move, and to move you. Slowly you are flipped 180 degrees. It seems you came in head first, and will leave the same way. You can hear Beckie grunting, but this is clearly nowhere near as painful as a normal birth. A moment later you can see your room again. Then you are being pushed out, and onto the floor.

You are a bit confused by the whole thing [The room seems too big for one thing, but you think you hear Beckie saying something "My baby. Bring me my baby!"? Naw, that can't be it... But then Rickie is picking you up and pushing you into Beckie's eager, and very large, arms. Does she want to eat you now?
But instead, she pushes your mouth onto a gigantic breast and the nipple goes into your mouth, and you feel a marvelous taste. Instinctively, you start to suckle. As you do, you feel Beckie hug and caress you as she mutters very un-Beckie like terms of endearment to you. However the milk tastes so wonderful, you pay little attention.
You hear Rickie saying something about how you are really growing, but you are more concerned with the one breast being empty now, and you transfer your lips to the other, to Beckie's approval. All too soon, that one too is empty. A bit stupidly, you look around for a third boob, and of course don't find one. However, you do confirm this is your room, and it seems normal now.

And Beckie is actually saying stuff like "My wonderful daughter, I love you.", this despite the fact Rickie has been pounding your rear for some time now. [That milk was really distracting!] You scream your climax right in her face, and she still smiles at you and gives you a kiss. Nor does she stop when Rickie starts on her.
She does stop when Rickie puts her over the top, but now she starts acting like your mother, including with demands you do your homework and fashion "tips" that seem likely to doom you to dweebdom. What is weirder is that you roll your eyes and say "Yes, Ma." just like you did with your mother.
It doesn't help that she seems to think you ought to consider Rickie your "dad", an idea you definitely don't have. But when "Ma" insists you catch up on back homework instead of playing with Rickie, you do as told. With a bad attitude of course, but still...
As you set to it, you wonder if you shouldn't try to un-birth Beckie. It might teach her not to boss you around, and that week of being "pregnant" would be a lot of fun... But you and Beckie are already acting rather odd. Could that make it even stranger?