Hoping this is my BFP!!

Ann
We had been trying for about 4 months up until march when we decided to wait a little longer to TTC.  I guess not having the stress of TTC resulted in this?  Going to the doc tomorrow for a blood test before I break the news just so I can be 100% sure.  I'm hoping our decision to wait isn't going to make this stressful.  Is this dark enough to even be considered a positive?