I think Pallavi was a little too much. No men would like to hear he can't father kids. I mean it's a worrying thing. It wasn't comedy, if Pallabi told by drinking he can have fertility issue its different, but already having, thats not something to joke about.
I think writers again have no sensitivity in portraying certain issues.
i wish they did it in a more subtle way - like her alluding to that could possibly be the issue and when he starts freaking out for her to be like "See? this is why you should stop drinking, you were worried weren't you?" and reveal that he's healthy but that's the path he was going down if he didn't get it under control.