oh ok the package said it was best to take the test with morning only if you taking it before AF is due. so i figured since i guess she left it was ok to take it this evening. i was in a bit of a dilema. i have an on my iphone to track my cycles. i been using it since july 2010. its been pretty accurate and right so thats what i been using. my cycles have been regular coming and leaving on time. it said AF should arrive january 20. january 17 came and thats when i started spotting. it started light.only had cramps the first day and they were not as bad as they usually are. there was no flow. it was more so on and off. it did not increase in volume. at first i thought it was implantation bleeding. it started pink but more dark red. lasted only three days. i got curious and went to the net and found another AF tracker and when i put in my info it said she would come january 17. so when i saw that i was really confused. cause all along i was using my iphone since july it has been right every month. so im just confused all over again.
Any test you take should be take with first morning urine. It of course could just be an off cycle, but your urine might be too diluted to properly show on a test.