Wishful thinking?

Ok, so I am on day 58 of my cycle... Longest it has been in 2 years. No AF, no spotting at all. My basal temp has stayed about the same, no obvious rises or dips. Took a test this morning, waited 5 min, and I didn't see a line. I held the test up, and the light from my lamp hit the back of it... And there was a 2nd line! Now, I am not getting too excited, but I have never seen any kind of 2nd line in the 5+ years of trying and testing. Does seeing the second line when the light is behind the test mean anything?

Either way, I will retest in a few days.