Perineal pain occurs in 97% of women with episiotomy or first- and second-degree perineal tears on the first day after delivery. The study aimed to assess the impact of capacitive and resistive energy transfer (TECAR) on perineal pain and discomfort in the first two postpartum days. The prospective randomized double-blind study was performed with the pain and discomfort assessment using the Visual Analogue Scale at baseline and after both TECAR interventions. Characteristics data, delivery information, and the number of painkillers taken were collected. The assumed significance level was α < 0.05. The study included 121 women with a mean age of 30.7 ± 4.2 years and a median BMI of 26.1 kg/m (24.1; 28.9). Pain reduction at rest, when walking, and discomfort reduction when walking were significantly higher in the TECAR group compared to the sham group ( < 0.05). After the first TECAR intervention, significant reduction in all measured parameters was observed in the study group ( < 0.03), whereas in the control group, it was observed in pain and discomfort while sitting ( < 0.04). The amount of ibuprofen taken on the second day was significantly reduced in the study group compared to the first day ( = 0.004). TECAR has been shown to provide more immediate and significant reduction in perineal pain and discomfort.