Pregnancy is a period in which physiological and psychological changes are experienced and discomforts related to these changes are observed, and comfort is affected for the pregnant. However, fetal health concern refers to the concern of the expectant mother about the health of her developing fetus. Mindfulness is a non-judgmental and accepting focus of one's attention on what is happening right now. A total of 96 pregnant women (48 experimental, 48 control) are planned to be included in the study. Data will be collected with the "Personal Description Form", "Prenatal Comfort Scale (PCS)" and "Fetal Health Anxiety Inventory (FHAI)". In the study, a stress reduction program (MBSR) based on mindfulness will be applied by the researcher to the pregnant women in the experimental group.

Women experience intense physiological, psychological and social changes during pregnancy and postpartum period. Pregnancy and postpartum period can be a difficult process for some women due to biological and environmental factors. Mindfulness-based approaches have been used in solving both physical and mental problems in pregnant women and very positive results have been obtained. The aim of this study, which is carried out to determine the effect of mindfulness on prenatal comfort and fetal anxiety levels in pregnant women, is aimed at creating intervention programs compatible with the antenatal period and contributing to the improvement of pregnancy outcomes. A total of 96 pregnant women (48 experimental, 48 control) are planned to be included in the study. Data will be collected with the "Personal Description Form", "Prenatal Comfort Scale (PCS)" and "Fetal Health Anxiety Inventory (FHAI)". In the study, a stress reduction program (MBSR) based on mindfulness will be applied by the researcher to the pregnant women in the

Inclusion Criteria:

• Not having any diagnosed psychiatric disease,
• Literate,
• Using a smart phone,
• With internet access
• Having a headset accessory for phone calls,
• Pregnant women who voluntarily agreed to participate in the study

Exclusion Criteria:

• Filling in the questionnaire form incompletely,
• Pregnant women with communication barriers and mental disabilities

Pregnant