Something else you can add to your self-monitoring routine. Apparently infected people (even those who are asymptomatic) begin to loose their sense of smell early on. A Canadian researcher has suggested that a sniff test of peanut butter, in particular, is a good indicator because of the way the Covid-19 virus affects your smell receptors.
Peanut Butter Sniff Test

If you have problems sensing the complete smell, then you should self-monitor and review other self-testing procedures. If you then show other symptoms, call a physician or you local Covid-19 centre for further instructions to get physically tested.

Smelling the aroma of peanut butter (especially on toast) is one of life's little pleasures for me, but probably not so good for someone who is allergic to nuts.