[Question] How do you determine temperature cutoffs for women’s body-temperature?

I do have a female primary partner with whom I’m not cohabating. Even through I’m mostly in quarantine and my partner is as well, I do want to minimze the risk of getting COVID-19.

Given that fever is frequent in most cases of COVID-19, I consider daily temperature measurement a good way to decide whether or not to see my partner. I likely want to use a relatively low value because I’m more afraid of false negatives then false positives.

For women the temperature fluctuates during the cycle and I haven’t read much about that. How do I set a good cutoff for abnormal temperatures for a woman?