Anyone had evap/dye line like this?

Ashley • Astrophysicist TTC @ 33. Oliver & Alessa born/passed Sept 2008. Emma born Aug 2010. James stillborn Jan 2015. Sarah born Jan 2017.
I'm 8-9 DPO (short LP) and did a 10miU ept this morning. The skinny line to the right is a dye run, which I've seen before, but the thicker, fainter line to the left...? Has anyone gotten a double dye line or dye line + evap line that looked like this before, or could this be a faint BFP?
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