I also felt that yesterday's episode beautifully depicted ishita's insecurities and sadness towards her issue of not being able to conceive. It also showed the confidence and clarity Raman had in his relationship with her and Adi. He also felt her pain.
In my wild and random thought I came up with a future storyline.
What if in the blood test aid is diagnosed of a rare disease and to get new stem cells do for suggest that they need a newborn sibling. Then Raman decides that Ishita becomes a surrogate mother or through IVF so that she can get the pleasure of being a mother herself! This would cover another social issue. Not sure though whether they have elaborated on ishita's medical issue.
Does it make sense?