Pregnancy is a continuous chain and starts from ovulation, release of ovum, migration of spermatozoa and ovum, conception process, nidation (implantation) of the endometrium, formation of the placenta and growth and development of the products of conception for approximately 280 days (40 weeks) and no more of 300 days (43 weeks). The length of pregnancy from ovulation to parturition is approximately 280 days (40 weeks) (Rukiah & Yulianti, 2014). The aim of this study was to determine the effect of pregnancy exercise on reducing lower back pain in second trimester pregnant women at the Sonomartani District Health Center. Kualuh Hulu District. North Labuhanbatu in 2022”. Experimental type of research. Experimental research is a research design used to look for causal relationships with the involvement of research in manipulating independent variables (Nursalam, 2019). The sample in this study were all second and third trimester pregnant women at the Sonomartani District Health Center. Kualuh Hulu District. North Labuhanbatu in 2022 there will be 35 people. . The data collected in the research is primary data, namely data obtained directly from respondents. The data analysis used is chi square. The results of the tabulation research show a relationship between the duration of using injectable contraceptives for 3 months and menstrual disorders in 3-month injectable contraceptive acceptors at the Melak District Health Center. West Kutai, East Kalimantan in 2023 with a p-value = 0.049. So Ho is rejected and Ha is accepted, which means there is a relationship between the length of use of 3-month injectable contraceptives and menstrual disorders in 3-month injectable contraceptive acceptors at the Melak District Health Center. West Kutai, East Kalimantan in 2023. Conclusion: Family planning acceptors can choose the right contraceptive method. Family planning acceptors can tell midwives or health workers about the various types of contraceptives before choosing the contraceptive method. Always monitor changes in side effects so that if there are complaints they can be addressed immediately.

Background: Preterm/preterm delivery is still a problem in the world including Indonesia, related to prevalence, morbidity and perinatal mortality which is the main cause of infant death and the second cause of death after pneumonia in children under five years of age. This study aims to determine the factors that influence the incidence of preterm labor at Rsia Stella Maris Medan in 2022. Method: This type of research is a descriptive study, with a cross-sectional design. Sampling was carried out systematically (systematic random sampling), where the sample in this study was 64 respondents. Data collection techniques using a questionnaire sheet. The bivariate analysis technique uses the che square test. Results: the results are almost half of the birth events with ages <20->35 years as many as 40 respondents (59.4%) almost half of the birth events with parity ≥5 times as many as 38 respondents (32.9%), most of the birth events with Ever experienced premature labor as many as 35 respondents (54.7%), almost half of those with premature rupture of membranes were 34 (53.1%), most of the incidents of childbirth with placenta previa were pregnant women not with placenta previa as many as 44 respondents (68.8%), most of the incidents of childbirth with pregnant women who experienced preeclampsia/eclampsia were (56.2%) and most of the deliveries were with twin pregnancies for pregnant women with single pregnancies as many as 36 respondents (56.2%). Conclusion: That there is a relationship between age, parity, history of preterm labor, PROM, Placenta Previa, Preeclampsia/Eclampsia, Twin Pregnancies Affecting Premature Labor at Rsia Stella Maris Medan in 2022