I just saw the episode and in the precap, the police were asking Shekhars about pregnancy! Why can't Saanchi use this opportunity to get Jagdeesh back? Her only aim this moment is to get him; by hook or crook or whatever she can do! Imagine she overhears the conversations, she would think- if she tells lie that Jagya made her pregnant, her family would get them married as soon as possible and JaGan will be separated forever! Because Shekhars would do anything for her. If they knew she tried to suicide because she is pregnant, they've no choice than getting both married as soon as possible, to save their reputation in society. No one will get time enough for a second thought and this marriage will happen at any cost, in the next possible moment.
Now as per the spoiler Shiv will get Jagya imprisoned! How much angry he might be, I don't think a sound person like Shiv will fall into such cheap levels that he simply takes revenge on Jagya by sending him Jail only for he is angry. Even if he sends Jagya jail, there must be solid reasons. Imagine Anandi informs Shiv about JaGan marriage and then Saanchi declares she is pregnant from Jagya! Now Shiv will not forsake his sister's words anyhow. So being the loving brother, Shiv will send Jagdish jail, knowing he married another lady cheating his sister.
What would be more interesting is how Ganga and Anandi would react to this situation, if this is what going to happen. Ganga recently only got married. Anandi will be in dilemma what to do! Nobody would believe Jagya, for his rotten past! What if Anandi choose to support Jagdeesh??? After all, she is the main scapegoat of the show, followed by Jagya and recently added Ganga!
As I told, this is only a wild guess based on spoilers. I'm not sure whether any of this would happen. Chances are high that I will be proved wrong; because she cannot hide the truth for longer time- it is pregnancy. But I want to know your opinion and views! Kindly stick to the topic, please don't dig out any of Jagya's or Shiv's past. They've nothing to do here, I think.
Edit- just now Mahi reminded me(below) both Jagya and Saanchi did not meet in past six moths. I'm a little irregular. So I don't know. But still she can say they met secretly, putting all blame on Jagya!