Start of something?

Heather
I have one beautiful 3.5 year old daughter.  Since having her I've had 2 miscarriages and a 1 missed miscarriage and had to have a d & c.  Period should start this coming Tuesday.  I've taken a few tests but yesterday thought I saw something.  Did not use fmu took it after we came home from a birthday party.  
 Woke up at 5 am forgot to test with fmu so tested around 7 am.   I waited about 5 min but then got caught up wih my daughter so not sure when the faint line showed up...could this be the start of something? I'm fully aware this could be an evap line and don't want to get my hopes up. Thoughts?