I dont know what I believe?

Im 17 and last week my nan died, i honestly have thought religion was a bunch of bull but Ever since my nan ped away I have been experiencing things also when she was dying like she saw a tunnel and felt sick in the tunnel and her wings where to heavy and all this stuff and tering her ashes today a single feather not a bird feather justa feather landed on the patch where her ashes were? is that a sign of an angel or what? I still dont believe in all the bible says but i feel confused now i have experienced this and spooky spirits like i have felt a presence around me. help me to figure myself out please please