Second Line?

Second Line? I'm on cycle day 37, AF was supposed to show her face on the 7th and is still in hiding. I took a test with FMU on the 9th and it was negative. I took a test this morning with SMU and I got a super faint line. Hubby does not want to hear anything about it until I'm at lest 10 days late and have a dark line. (We had a chemical a couple months back, and he is just trying to protect both of our emotions) Please be praying this is not just a chemical! 
I have had bad back pain for over a week now (which is not normal for me) I have also had worse nausea (I typically do get some right before my cycle starts) my boobs feel like they might explode, and I have never liked BiG Macs, but I had to have one last night and I enjoyed it. 
Do you see the second line?