Need advice!!!

Jessica
My AF is still a no show.  6 days late and every day I am having more and more symptoms.  My boobs are starting to feel really heavy and achy(different than when my AF is going to start), random bouts of nausea, twinges and achiness on my let side of my abdominal area, moodiness, very vivid dream (last light i dreamt that I was pregnant).  I took a test yesterday and there was what looked like a shadow in the test window but not a true line and later in the day i looked at it and there was clearly a line but I know you cant trust it after the time frame.  This mornings test also looked like a shadow so I don't know what's going on.  My dr did put me on progesterone last month to get my hormanes balanced out, so I am not sure if thats delaying my period.  My periods are always like clock work.  Is it possible to still get a positive this late? 
The first test was taken yesterday morning around 5 min, the second pic was about 2 hours later and the third was taken within 5 min this morning. What do you all think?  I just don't know what to think.