Opk help ladies

Hey ladies! Looking for some help. So I took an opk test for the last 3 days. I have done this before that's why I kept taking them because I figured the control line would eventually be darker than the test line. The first two tests I have the control line and test line are almost the exact same color. My husband and I had sex the last two days. So now the test I have today it looks like the control is definitely darker than the test line. Do anyone else see it?? And if so should we bd again today??