***REVISED*** I left a 1 star review a few days ago, but I want to change it to 5. The customer care team helped me so much. I was uneducated and full of crazy emotions from TTC. They explained that PDG is different than getting a blood test to measure progesterone, also it is normal to have some sort of fluctuations in this. I am so glad I bought these because I can see that my body just needs a little help with producing progesterone. I got 1 borderline positive, 1 positive and 2 negatives. Now I have something to refer to at my next doctors appointment.