What the heck

Okay, I’m getting confused and frustrated. I’ve been getting these for 3 days now!!!! They won’t get positive!!! What is going on?! I had a miscarriage last month so I’m trying to track my cycle again and I just started using these again and now they are confusing me more. Am I gonna ovulate soon or should I stop testing?! I’m sick of wasting tests when they never get positive. Sorry for the rant, just so frustrating