I am sure this current track is something they just made up on the way (may not have been the original scheme of things). If it was planned for in the beginning itself they would have shown a situation where Prachi would have been away (under some excuse) somewhere for about six months during the supposed pregnancy. That would then be used as an excuse for the rest to believe she could have had a baby in the mean time. They could have come up with a better excuse to pin the blame of fatherhood on Neev. His being her ex-fiance and still not marrying her when she was pregnant is not explained. It would have also lent greater credence to Milsi's suspicions if they had not shown the c-night before this track began. All this makes me feel that everything was just patch up in a hurry without any thought to logic or reason. If at all the baby raaz in finally revealed I'm sure it would again in a not-so-well thought out sequence.