Question

So i had a miscarriage in February just for some insight

Last night first time doing a ovulation test you could clearly see 2 lines. I know that is still a negative but 12 hour later i take another one and there is barely a line at all? Is that normal

That was the first

This is the second.

Is it normal for it to go far dark to light before ovulation peak?

Sorry if it a dumb question.. still learning with this! Thanks guys :)