Opk help pls

Emily

Hi girls I’ve ttc nearly 5 years now, just been for my hsg on cycle day 8 I’m on day 12 now and always been pretty rubbish with opk but I took this yesterday at 6.30pm

Then took this today

Tbh a lot darker to me I’ll post them together so you can compare

How shall I test now? 2 times a day or same tomorrow also how many days do you think till ovulation