Could I Still Have A Viable Pregnancy At 7 Weeks After Being Diagnosed With A Blighted Ovum On Ultrasound?

Goodday, am 6 weeks pregnant and I went to the doctor in 5 weeks, he said the baby is there in a gastration sac but there is no growth. He said I should come in 7 weeks. Before that I went in 6 weeks and 5 days because I was spotting and having brown discharge. We did ultrasound sound and he said there is no baby. He diagnosed me with blighted ovum but am 7 weeks today nothing is happening.