Im covid positive.how frequent should i check my oxygen level in blood?

If you have a pulse oxygen meter, test if your symptoms begin to show shortness of breath, or increased work associated with breathing. If your sats dip below 90%, go to an ED for possible admission.

Watch for signs of distress, shortness of breath, prolonged cough or fever. Obtain a pulse oximeter for home use.

Check your oxygen at least twice a day and anytime you have a change in your symptoms. For instance, if you have had mild dry cough and cough and cough becomes wet and productive, then check O2 in addition to your 2x a day checks. Stay well hydrated and just rest, rest, rest....