Invalid OPK?

Jennifer • Married to my best friend 💕 Chemical engineer 👩‍🔬 SMD 12/11/2019 , expecting #2 January 2021

I took this at 530 when I got home from work, the lines make me think it's invalid. I had a much darker line yesterday. What are your thoughts? I tested again after holding my urine for 3 hours. Much better result!