Web MD. https://www.webmd.com/baby/guide/second-trimester-of-pregnancy Diakses pada 11 Januari 2021Web MD. https://www.webmd.com/baby/4to6-months Diakses pada 11 Januari 2021Mayo Clinic. https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20046151 Diakses pada 11 Januari 2021Mayo Clinic. https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/pregnancy/art-20047732 Diakses pada 11 Januari 2021Healthline. https://www.healthline.com/health/pregnancy/pregnant-breast Diakses pada 11 Januari 2021Baby Center. https://www.babycenter.com/pregnancy/your-body/hair-and-nail-changes-during-pregnancy_1456563 Diakses pada 11 Januari 2021International Journal of Women's Dermatology. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5715231/ Diakses pada 11 Januari 2021Indonesian Journal of Obstetrics and Gynecology. http://inajog.com/index.php/journal/article/download/977/627/ Diakses pada 11 Januari 2021Healthline. https://www.healthline.com/health/pregnancy/dizziness-in-pregnancy Diakses pada 11 Januari 2021Healthline. https://www.healthline.com/health/treatments-for-dizziness Diakses pada 11 Januari 2021Mediators of Inflammation. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385665/ Diakses pada 11 Januari 2021Women's Health in Complementary and Integrative Medicine. https://www.sciencedirect.com/topics/medicine-and-dentistry/striae-gravidarum Diakses pada 11 Januari 2021International Journal of Women's Dermatology. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5440454/ Diakses pada 11 Januari 2021What to Expect. https://www.whattoexpect.com/pregnancy/symptoms-and-solutions/insomnia.aspx Diakses pada 11 Januari 2021Web MD. https://www.webmd.com/baby/leg-cramps Diakses pada 11 Januari 2021Mayo Clinic. https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/expert-answers/leg-cramps-during-pregnancy/faq-20057766 Diakses pada 11 Januari 2021United Kingdom National Health Service. https://www.nhs.uk/pregnancy/related-conditions/common-symptoms/back-pain/ Diakses pada 11 Januari 2021Mayo Clinic.https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/pregnancy/art-20046080 Diakses pada 11 Januari 2021Healthline. https://www.healthline.com/health/pregnancy/second-trimester-pain-bleeding-discharge Diakses pada 11 Januari 2021Journal of Clinical Medicine. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6832549/ Diakses pada 11 Januari 2021Healthline. https://www.healthline.com/health/pregnancy/second-trimester-complications Diakses pada 11 Januari 2021What to Expect. https://www.whattoexpect.com/pregnancy/symptoms-and-solutions/hemorrhoids.aspx Diakses pada 11 Januari 2021Medical News Today. https://www.medicalnewstoday.com/articles/pregnancy-hemorrhoids Diakses pada 11 Januari 2021National Center for Biotechnology Information. https://www.ncbi.nlm.nih.gov/books/NBK532888/ Diakses pada 11 Januari 2021Healthline. https://www.healthline.com/health/pregnancy/second-trimester-checkups-tests Diakses pada 11 Januari 2021Healthline. https://www.healthline.com/health/pregnancy/second-trimester Diakses pada 11 Januari 2021