blighted ovum or missed miscarriage?

Good evening ladies..

Has anyone in here experienced a blighted ovum or missed miscarriage? If so what were you symptoms? Did you test stop darkening after a while.. ect? Did you bleed? I went for a early scan with a private ultrasound tech because I had 2 early chemicals so I was worried and anxious & according to my last cycle I should be 7weeks6days but ultrasound tech said that she couldn’t see anything but a sack.. I took a test the day I went which was Tuesday & I also took a test today which is Thursday & the test today is basically a dye stealer which is way darker than Tuesday test. Waiting for my appointment for my ob to come but I might just go to e.r because idk what’s going on. I have no symptoms besides sore breast & it’s been just that every since I first found out. Please comment below your experience