I'm confused and need help lol

I took opk at 1050 this morning (top pic)(right in pic of both) and then took another at 215 (bottom)(left in pic of both) to me the one at 215 looks lighter than one from this morning... did I ovulate yesterday? I'm on cd 12.. or could it be that my urine is just more diluted? Im going to take another late tonight and in morning but as of this morning I thought I was approaching peak now I dont know. Any help would be greatly appreciated! Im new to opk's