BFN but late period?

Sara • First time mama to a beautiful baby girl! 💕👶🏼

I’m now 5 days late and I’m still getting BFN. Anyone have this and end up getting a BFP or should I just assume I’ll miss my period/something’s hormonally wrong? I made an appt for Monday for a blood test and possible ultrasound but my patience is running thin. I’ve been off the pill 4 months now and have had 4 regular 35 day cycles.