Late period with a - test

I'm really frustrating right now because my husband and I have been trying to conceive for almost a year. I can't count how much we've already spent on pregnancy tests. Some were +++, and most were ---. It was always disappointing when I see my period after a false positive result. I'm now 2 days late, no symptoms of menstrual; but still get a negative test result. I went to see a Gyn already, and using an ovulation kit. It just so discouraging at this point.