https://i68.photobucket.com/albums/i22/kbubblez16/PGtest032.jpg I'm very new here. I mostly lurk and read / I never post often maybe once or twice. But DH and I have been TTC for a while now without any luck, so we really started TTC about 3 months ago. Today I am 13DPO. I used an cheap internet test strip. AF is due in two days. I tested yesterday also, and it looked about the same as this...maybe just a tiny big darker today. How long does it take for them to become darker? Please let me know what you think. Thanks.