Vvvvvvfl or indent on FRER

El
Hi-I am 5dp5dfet and took my first FRER test this morning with FMU. 
At 3 minutes there was possibly the faintest squinter of a suggestion of a line, so I did not throw the test away and when I looked again a few hours later there is a definite faint line with pink color (I think, better in person). I know this was after 10 minutes so taking it with a grain of salt and will test again tomorrow. 
Faint positive?
Indent/evap?
Ignore since after 10 minutes?
Thanks for your help ladies!!

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