Kay kay kay, so here's what I think will happen.
I don't think Shravani will be pregnant. No such scene was ever shown between them that would lead to a pregnancy. Face it, we all know Ekta's serials, and we know how much she loves to make it rather blatant once a couple has "ahem ahem"-ed together. I think we would know if they had slept together.
What I think is that Archana will go into a depression mode, a la Devdas Manav from about 1.5 months ago. What we find from the SBB (I believe it was) video, is that she will blame herself for all of this. My best guess is that somehow Manav will help her out of the depression and then they will kind of be emotionally together for a while (behind their families backs) which will lead to a dhamakedaar reunion.
For example, Archana and Manav are in the train in the same compartment (as usual, lol), and they see each other. Manav the Angry Young Man looks away after giving her a nice nasty look, which makes Archana even more upset. She gets lost in thoughts of all the bad stuff (divorce papers, jail, Sachin's death, Manav yelling at her, pretty much anytime that Manav hated her). She is edging towards the opening of the train unknowningly, and then she realizes it but doesn't care at that point, because what is there to live for? The only man she ever loved hates her with a passion. (Okay, I kind of took that from the end of the book The Awakening, where the female isn't conciously committing suicide, but once she realizes she's at a point of no return she just lets go.) Then, padabapapapaaaa, apna hero Manav aake saves the scene. He rushes towards her and grabs her arm and pulls her back into the train. Then, he unleashes his anger and gets all up in her grill about what was she doing, and why she didn't think of anyone in her family, or of...
Option A) her yaar dildaar Satish. To which Archana goes all wtf man, and finally gains the courage to tell him off about it and tell him how she doesn't love Satish, she loves him (Manav).
Option B) me! Then Manav is like, uh-oh, Freudian slip. But Archana is like hells yeah boy!
Either way, they realize that they still love each other. (You can tell that I am skipping the token drama and dragging.) Then they FINALLY become each others emotional support and it all culminates after a long while and some more drama into a reunion. This extra drama can include a Satish-Varsha-Ashwin the Boss triangle, some riduculous MAR ki chaal(s), and Savita and Sulochana ka naatak.
That was fun.