Hi thanks for your question.
Your wife tested positive for pregnancy
, but ultra sound
report is negative for pregnancy.
Trans vaginal ultra sound report states, borderline thickened endometrium
with minimum fluids in pouch of douglas.
These are normal ultra sound finding.
Fertilized ovum get implanted in uterus
around 4th week, that is why uterus (womb) is still empty and that is your gynecologist mean.
In pregnancy of less than 4 week duration, uterus is usually empty, that is why it is not detected by ultra sound
Hope this answers your question