This prospective observational study aimed to evaluate the relationship between menstrual phase cycles and spinal needle-puncture pain during spinal anesthesia in female patients of reproductive age.

Before the spinal anesthesia procedure, the anxiety and depression levels of the patients will be evaluated with the 14-scale 'hospital anxiety and depression scale.' The spinal anesthesia procedure will be performed by the anesthesiologist responsible for the patient. At the end of the spinal anesthesia procedure, a researcher with no knowledge of the patient's menstrual phase information will ask rate the spinal needle-puncture pain felt during spinal anesthesia with a numerical rating scale (NRS), which is graded from 1 to 10 (0: no pain, 10: very severe pain).

Inclusion Criteria:

• Female volunteers of reproductive age have had a regular menstrual cycle for at least six months

Exclusion Criteria:

• Pregnancy
• ASA physical status III and IV
• Patients with psychiatric disorders,
• Emergency surgeries
• Mentally retarded patients,
• Patients with multiple spinal anesthesia trials
• Patients with previous spinal surgery experience

only female patients will be involved with regular and active menstrual cycles

80 female patients who are of reproductive age and have had a regular menstrual cycle for at least six months