Mothers who will be included in the control group will be interviewed twice in total. Pretest data will be obtained by applying the "Personal Information Form", "Insufficient Milk Perception Scale" and "Breastfeeding Motivation Scale" during the first interview. A sample of the mothers' saliva will be taken to measure cortisol values. Four weeks after the pre-test data are obtained, post-test data will be obtained by applying the "Insufficient Milk Perception Scale" and "Breastfeeding Motivation Scale". Finally, a saliva sample will be taken to check the cortisol value again.

Before starting the motivational interviews, pre-test data will be obtained by applying the "Personal Information Form", "Insufficient Milk Perception Scale" and "Breastfeeding Motivation Scale" to the mothers in the intervention group. Afterwards, a sample of the mothers' saliva will be taken to measure their cortisol levels. A total of 4 sessions of motivational interviews will be held for infertile women, 1 session per week for four weeks. At the end of four weeks, post-test data will be obtained by applying the "Insufficient Milk Perception Scale" and "Breastfeeding Motivation Scale". A sample of the mothers' saliva will be taken to measure cortisol levels again.

Before starting the interview, mothers will be informed about the interview intervals, duration, how many times it will be held, and that, unlike other interviews, the topic will be determined and the mother's opinions on this subject will be obtained. Each meeting will last approximately 15-30 minutes

The Insufficient Milk Perception Scale is a scale developed by McCarterSpaulding (2001) to measure mothers' beliefs about whether they produce sufficient milk. It consists of 6 questions. A minimum score of 0 and a maximum score of 50 can be obtained from this scale. A high score indicates that the mother's perception of adequate milk is high

Based on the self-determination theory of the "Breastfeeding Motivation Scale" (EMS), Peleg et al. It was developed by in 2015. After the scale was applied to the sample group, factor analysis was performed and it was determined that it had 5 factors. These factors; It consists of integrated, identified, introjected, external regulation and internal motivation. No total score is obtained from the scale. As the score obtained from the sub-dimension of the scale increases, the motivation representing that sub-dimension also increases

Satisfaction Level Rating with Motivational Interviewing Application is a scale developed by Hayes and Patterson in 1921, used to express some values that cannot be measured with numbers. In the satisfaction rating scale, which was created by taking the Visual Analog Scale as an example, the mother's satisfaction level will be marked on this line by writing "not at all satisfied" on one end and "very satisfied" on the other end.