OPK test

Samantha
Hi. I'm new here so hello to everyone. TTC baby no 1, been trying two months but this is the first cycle where I've actually tracked everything. Been doing OPK test every day since day 10, same time every day. This is today's test, the darkest is been. The lines are meant to be the same colour, or the test line (left side) darker than control line (right side). Trying to follow the sperm meets egg plan so don't want to miss our opportunity. Is this my surge?! I feel I need to wait a day or so for the line to get darker, what are your thoughts? My cycle last month was 35 days so I think I would be due to ovulate around 30th Nov / 1st Dec based on this. CM is still creamy....