4 days late

Here is my story .... This month glow predicated that my period would start today 4/24.... But doing my fertile week I did my opk since my first day. I got my surge way before glow had said. So we BD every other day and did our part. When I updated all the information my period was moved up to Wednesday 4/20.... Well I havent gotten my period and to be honest I'm scared to test. I've had a bfn for a year and half ....I know I need to.... Any advice ? If any ?