Saliva and urine analysis
Urine and saliva samples will be taken for subsequent quantification. We will assess hormones (oxytocin, progesterone, estrogens and cortisol) and metabolomic measures. These samples will be pseudonymised with a code and will be stored for 30 years in IMIM laboratories as a guarantee of traceability. In the present study we will try to characterize how the brain is reorganized during pregnancy and determine whether there is a relationship with hormonal and metabolomic changes.