three days late

Bunny • ttc 4 years with 2miscarriages. Rainbow BABY GIRL born 3/10/18💕🌈 Gorgeous girl#2 born 02/19/19💕💕 baby #3 due 03/01/21
so i was suppose to start three days ago & been getting all bfn. glow thinks i ovulated on april 9, could i still be too early? feel very very nauseous