It must be a drama aired before 2017
It is a romantic comedy I believe, there is one scene when a senior woman faints when she hears that the female lead is pregnant during a meeting (it was her grandma I guess and the ml blurts it out out of nowhere if I remember well) in a living room and chaos ensues in a funny way
There was one classic scene in a bed where both of them lie there and are shy and the ml tells her he doesn't mind that she hugs her, something like that