Will these get darker?

Helen • Wife, mummy to 2 gorgeous little people. Also 2 🌈 babies in the sky

I'm a seriously obsessed! I had a miscarriage last month at 6 weeks so it's made me even more anxious and I'm still testing a couple of time a day. Frer are coming out as below but some cheaper tests are much fainter still. Just want to know if the frer will get darker or should u stop testing?!!