Anyone else facing the loss of family while trying to remain as stress free as possible?

I got my positive after a year, the day after my birthday. It's very bittersweet now, as my mother in law passed away last week after a years long and courageous fight with cancer.

My question is, has anyone else experienced loss like that in the midst of what should be joyous? How did you deal? What did you do to grieve while keeping your emotions in check for baby's sake?