Hi thanks for using healthcare magic
Delayed periods can occur for a number of different reasons though pregnancy
is the most common cause.
The other causes would be stress (physical, emotional stress), inadequate diet, excess physical activity, abnormal level of certain hormones such as thyroid
hormone or prolactin
, polycystic ovarian syndrome
You can consider repeating the pregnancy test, it is suppose to detect HCG in the urine and some tests cannot detect low levels of the hormone.
Hope this helps