Pregmate HCG 25

I bought a bag of pregmate hcg tests-the sensitivity was supposed to be 25 which I guess isn’t that sensitive at all. I’ve been taking tests everyday start at 6 days before my period is supposed to start which is tomorrow or the 28 we aren’t sure yet because of the Letrazole I was taking.

Has anyone had any luck with these coming back positive before period is due? We have been ttc for 4 years and I’m just getting frustrated. I was using the first response tests but I was always getting bad tests so I bought other ones.

Update: AF is late by 2 days per my doctors schedule and 3 days late per glow. I’m 16-17dpo depending on the app or my schedule from my medication and still no positive test. I called my doctor and she said if I don’t get my period by Monday and I’m still having negative tests then I need to make an appointment. I’ve been having cramping but that’s been going on since my fertility week. It feels like normal cramping like when I get my period and other times it feels like a pulling in my stomach.