Crystal Clear evap lines?

Hi ladies, I'm sorry I haven't been on here for ages and ages but I gave birth to my son Jack nearly 5 mths ago and I have been so busy with him, but I hope you are all well and I wish you all babydust!!
I have a question about Crystal Clear tests that has probably been asked a million times before so if it has I'm sorry :-(
I still haven't had my period return after having Jack but 10 days ago hubby and I BD'ed and 6 days later I had some bleeding and I was certain it was AF returning after all this time as I had the cramps, sore lower back etc but the next day there was only the smallest amount, barely a smidgeon and pretty much stopped the next day. Even when I had the day of bleeding it wasn't even enough to fill a whole tampon(sorry if TMI !!) I did 2 Crystal Clear tests and and I thought I could see the fainest of faint 2nd lines so I pulled both tests apart and I checked after about half an hour and there was a faint 2nd blue line.
My question is this: can evap lines be the same colour as the control line, if they can then how do you distinguish between a evap line and a BFP line?
Chat soon, love muffet

If it comes up within the recommended time frame it's not an evap line.

When I did a home pregnancy test one line came up a strong colour and the other came up a faint colour.

When my GP did a test the same thing happened - And yes, I was pregnant !!

But, yes it's very important to only read the result with the recommended time frame mentioned on the home pregnancy test instructions !!!