Ovulation Faint Lines??

Annie • 23 years old. Diagnosed with PCOS & hypothyroidism. Married for 5 years. Ellie Rose 💕👶🏼 & Millie Jean 💕🤰🏼
I ordered these cheap ovulation predictor strips and I've been testing every other day 3 days after my last Clomid pill. 
It's been faint every single time. Should be two dark lines? Sooo will the line get darker?