anyone else experience this?

my grandfather was basically my dad. he passed away from ALS on 2/1. i didnt know it was ALS until 2 or 3 weeks before he passed and i hadnt spent much time with him because of the pandemic, i was pregnant, and had my girl 12/18. i do have bipolar disorder but my pregnancy went well and i feel like PP did too until a week ago. its just like his loss is triggering depression and i guess it would be PPD? i dont even know how to feel. its fortunately a mild depression but i wasnt sure if theres a chance itll go away if i start to cope well about his passing :/ im basically just numb and i dont enjoy the things i used to.