Trial and error. Symptoms start back up every-time I go off blood thinners. Visual issues , TIAs, cognitive. Clears up when I start back up. Covid started w

Trial and error. Symptoms start back up every-time I go off blood thinners. Visual issues , TIAs, cognitive. Clears up when I start back up. Covid started when I was just getting treatment so lost access to doctors, so no further investigating was done.