I think I am going crazy

I started to spot brown yesterday. I am so frustrated with my body right now. My temp was higher this morning, 98.13. So, I took a FRER. Within 3 minutes there was a faint second line, but it was so faint I couldn't tell if there was color or not. All I can think is that it is an evap line of some kind. And of course now I am at work questioning whether or not it was an evap line or a faint BFP. I guess I will test again tomorrow. I think it's gonna be a BFN though with all of this spotting and not much in the way of symptoms.