It's actually quite likely. In many cases where the yolk sac isn't seen at 5 weeks, it shows up later and the pregnancy progresses normally. I'd say there's a good 70 - 80% chance of a successful pregnancy depending on various factors like the mother's health and subsequent scans.
The likelihood of a successful pregnancy in such cases can be high. Many women have had successful pregnancies even when the yolk sac wasn't visible at 5 weeks. However, it depends on multiple things. If the mother is healthy and there are no other concerning signs in subsequent ultrasounds, the chances are good. Maybe around 60 - 70% or even more. But if there are other issues like bleeding or hormonal imbalances, the odds might be lower.
It could be due to a miscalculation of the gestational age. If the date of conception was misjudged, then what was thought to be 7 weeks might actually be a bit less. In such cases, the yolk sac might just not be visible yet but will become visible as the pregnancy progresses. Additionally, some women have hormonal imbalances that can initially slow down the development process but with proper medical care and time, the pregnancy can be successful.
It's not very common, but it does happen. Maybe around 10 - 15% of cases where there is no visible yolk sac at 7 weeks can still result in a successful pregnancy. This is just a rough estimate though, as it can vary depending on various factors like the mother's health, the quality of the embryo etc.
Yes, there are success stories. It might be that the dating of the pregnancy was off slightly. Maybe it was actually a bit earlier than thought, and the yolk sac hadn't developed enough to be visible at what was thought to be 6 weeks. Another possibility is that the equipment used for the ultrasound wasn't sensitive enough. In any case, with proper monitoring, some of these pregnancies went on successfully.
I know a woman who had no visible yolk sac at 6 weeks. She was really worried at first. But her doctor told her to wait and have another scan in a week or two. Turns out, the yolk sac was there in the next scan and she had a normal pregnancy. Sometimes, it just takes a little more time for the development to be visible.
One reason for a positive outcome could be that the first scan was inaccurate. Later scans often show the yolk sac when it has had more time to develop. For example, I know a woman who was told there was no yolk sac at 6 weeks. She was worried sick, but at 7 weeks, there it was. So don't lose hope right away.
One reason could be that the initial scan was just too early. Sometimes the yolk sac may not be visible at exactly 5 weeks but shows up a bit later. Another factor could be differences in the equipment or the skill of the person doing the scan. In some cases, the embryo might be developing a bit differently than the average but still be on a healthy track.
It's actually quite possible. Many women have had cases where no embryo was detected at 6 weeks but still had a successful pregnancy. It might be around 30 - 40% chance, but this is just a rough estimate. A lot depends on the individual circumstances like the mother's overall health.
Well, sometimes the position of the embryo during the scan can make it seem like there's no yolk sac. Later scans, when the embryo shifted a bit, showed that the yolk sac was there all along. One of my friends had this situation and she now has a healthy baby.
The chances can be quite good. Sometimes it's just that the scan is a bit early. Just wait for a follow - up scan.
One success story could be that it was initially a misdiagnosis. Sometimes the equipment or the angle of the scan might not be perfect at 5 weeks. In some cases, a week or two later, a clear gestational sac and a healthy embryo were detected. Another instance could be that the mother had some hormonal imbalances that made it seem like there was no sac at 5 weeks, but with proper treatment and rest, the pregnancy progressed well.