Clearblue digital flashing smiley

Kendra • Find your own happiness. Don't do what others expect of you. ~Baby Dust~
I got the flashing smiley which means to bd because I'm about to hit peak fertility but when I took the test out it looked fainter than the control line. Does that matter? Should I trust the test? I'm still bding to be safe but what do you ladies think?I also have been having brown spotting and light brown bleeding for the past three days. What's that about?