Please help very confused

I only see my donor once a week and I toke an clearblue ovulation test that said I was ovulating so we baby danced and the test states it only detects your two most fertile days 
However So far it has detected 4 days Im scared because I don't know which day I truly ovulated  and If the sperm will still be inside me when I do..
Question... If conception has happened will you continue to see LH surge on a test?
Question how to truly know when you ovulate if your body does not produce noticeable CM?
Thanks in advance for reading and answering

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