Ultrasound

Bridget NZ 🌈

I went for a 2nd ultrasound today has had some bleeding & pain last night. I’m 7w5d but baby is measuring 8w1d with a heart rate of 170!! I’m just wondering is it normal to have this black circle- hole in its head? The tech said that’s where the brain will go but I just wanted some reassurance that others have pics like this too it looks very defined