Sudden depression 😞

My mother passed away back in July and I’ve been handling everything really well for the most part bc well all knew it was coming (she passed away from breast cancer at 42). I’m not sure if it’s because mother’s days is coming up this weekend and the fact the we are coming up on a year after her passing or if my new seizure medication is causing my sudden depression. (It’s hit hard within a few days/week) I’ve taken this medication before but I was like 12ish years old.