Cheap Ovulation tests! 😤😤

Warning: Irritated beyond belief right now! I went to the store and they were out of Clear Blue Easy Advanced Digital ovulation kits. I was frustrated because I was certain tonight I would get my "peak" and didn't want to go a day without testing. So I bought a Box of First Response opk. Got home, poas--and I get this vague-who-the-hell-knows-what-the lines-mean- response! One is lighter than the other one is dark.... I don't think I want to rely on my visual judgment to "guess" whether or not I "may" be ovulating. If I wanted to GUESS, I wouldn't have wasted the money on this cheap crap. Going to every store till I find my trusted Clear Blue Easy Digital Advanced!! A simple blinking OR NOT blinking smiley face. YES or NO! 😤😤😤 ugh. Rant over. Thanks if you actually read this!