A system and method for determining a user's physical condition such as a hormonal level are provided. The system includes a portable or wearable device that measures multiple biomarkers, such as basal body temperature, saliva salinity, saliva pH, sweat ions, skin thickness, vitamin levels or breath carbon dioxide. The system determines the physical condition, such as the fertility level of the user based on comparing the measured biomarkers with data models. The determined physical condition, such as the fertility level, is communicated to allow the user to know their status.
