Urgent advise needed

Anisha • Enjoying motherhood!! Love my baby
My AF is 5 days late now and i took a test 2 days back and it was positive. When i visited my doc today, she said that the line in T band needs to be as dark as the C band. She said me to wait a few days and test again till T band line becomes more dark. Whats this i am so worried? Has it happnd with anyone before.?