Ovulation test! Do they work or should I use something else???

Jennifer • Married on 6/10/17 to the love of my life! I have a daughter (born: Nov. 9, 2018) and now I’m expecting our second baby due on Jan. 2, 2021 😊😍❤️🌈👶🏻👶🏻🍼💍👰🏻

Is it possible for my Ovulation Tester to test incorrectly? All day yesterday and today I've been cramping and I'm not due for weeks to get my period yet so I figured I must be ovulating. I'm supposed to be ovulating today or tmrw but it said negative yesterday and today. Soooo is this possible for it to test wrong? I'm getting so discouraged and this whole process is very trying on my nerves and self esteem as a woman. Does anyone ever feel this way too? 😞