The difference 8 hours can make

So I tested this morning with FMU and got a BFN. I am 10dpo.  I'm a POAS addict so this afternoon I decided to take another test and to my surprise, there was a faint line. so I took a second to be sure it wasn't a faulty test.  It too had a second faint line. I'm excited and nervous all at once. This was our 2nd month ttc. I have 3 other children and have had 2 miscarriages (blighted ovums) years ago. I go to the doctor Aug 11th for blood work.  My husband doesn't believe the pregnancy test. He's wants the Drs to confirm the pregnancy before he will believe it. I'm leaving it in Gods hands. My faith is strong.