ovulation

Hi so i’m new to tracking my ovulation here’s my results so far im today is CD 20 for me it looks like my numbers are getting higher and the test line is getting slightly darker so that means i’m getting closer to my peak right? also what do the numbers signify? i have irregular periods so im not sure if im going to run into any trouble using these 😕 but im currently experiencing a little ewcm and super light cramping so im hoping im on the right track to ovulating 🤞🏼