When to take a pregnancy test?

Hi everyone!

I did an ovulation test yesterday even though this app has predicted today as my ovulation day. When is the first possible time I could take a pregnancy test? I did another ovulation test today and there is a line but it’s faint this time.

I’ve also been tracking my BBT but I won’t lie, I don’t always do it at the same time every day so it’s been a bit sporadic this week. I’m not sure which one I should trust more out of the BBT or ovulation strip.

I’m quite new to this as this is only my second cycle of trying so any tips/advice off anyone would be really helpful.

Thank you xx