Hi! So I am new to this OPK thing... This is my 3rd day. I'm doing it because I've heard that the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> is less than reliable, especially if you have irregular periods like me. My question is:

Does the test line get darker as you get closer to LH surge or is it just whether or not it's darker than the control? I had two completely negative the last two days and today I have a line that is there, but lighter than the control. Glow says I ovulated sometime between last Monday and saturday, AF due May 12th. Last AF was the 12th of April, but she also came on April 1st when she wasn't supposed to according to what my BC schedule was.

My other question is: What does an ovulation stick look like if your pregnant already? I've read that it will look like an LH surge?