OPK - drinking too much water?

According to Glow, this is my fertile week so I have been using OPK's this week. I had a faint line Tuesday and a darker line Wednesday, shown below. This is my first time using OPK (trying for baby #2) and I know once it's as dark or darker then you will begin ovulating within 24-36 hours. Today I tested and there is no line, BUT I've drank a total of 100ish ounces of water today. If I had a positive test yesterday, do you think the negative test today is just from my urine being diluted from so much water? Any experience?