Progesterone Test

I didn't have ANY symptoms of ovulation (besides a positive opk), so I bought this easy@home progesterone test to check if I ovulated. I'm sure they're not THAT reliable, but it cost less than going to the doctor! Does anyone have experience with these tests? In this case two lines actually means a NEGATIVE result, but the second line is so faint that I can't figure out if it means my levels are starting to get higher and that I maybe did ovulate after all? (I don't temp, but will start next cycle after this mess!)