Chemical preg. or is there still hope?? please help!?

i am now on cycle day 40. i had my last period june 13th but not sure when i ovulated. since this past sunday i have taken a pregnancy test everyday with first morning urine and they all had a very VERY faint positive within 10 minutes. i took a Cleablue digital 2 days ago and it said "not pregnant" then another stick test and it had a faint line again! whats going on? could i have 5 false positives in a row or am i really pregnant? some of the tests are soo light i had to hold them at an angle by the window in order to see. im having alot of symptoms.. slight nausea, clear watery dishcarge, tenderness, fatigue (im always exhausted!) and im soo emotional lately. i havent had any spotting at all. i have an appointment tomorrow but im worried about what theyll say. i heard if the line doesnt get darker when you take a test a couple days later it could mean a chemical pregnancy is happening or an ectopic pregnany. i am so nervous! i want this soo badly. will the tests at the heslth department pick up more than the hpt? and will it be a faint line like at home? or what? any advice or encouragement is greatly appreciated!! thanks!!