Positive opks and intercourse please help

[AllRainbows]

So I had a positive opk yesterday at 10 am...my dp was away last night so we could not have intercourse ..he came back early this morning and we had intercourse at around 10am so nearly exactly 24 hours after my positive opk...I have done another opk and the line is now just slightly lighter than the control line so my lh surge is going down...is it too late to conceive this is my first time using opks so I'm unsure

This is a pic of the opk I have just done

Sorry this is a clearer picture the opk yesterday was as dark as the control line

It's still positive. Keep DTD!

I used to have this anxiety every month about timing sex. Best advice I got was to just keep going every other day (or every day if you fancy it!) until 3-4 days after your opks are negative again.

Thanks for the replies will keep dtd anyway !