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In addition to an increase level of TSH above 2.5 mU/L during the first trimester, and above 3 mU/L in the second and third trimester, a decrease fT4 concentration (also using reference range for pregnant women) will help clinicians diagnose overt hypothyroidism during pregnancy.
Pregnancy hormones relax the connective tissue that holds your bones in place, especially in the pelvic area. These changes can be tough on your back, and often result in discomfort during the third trimester. When you sit, choose chairs with good back support. Apply a heating pad or ice pack to the painful area. Get regular exercise and stretch afterward. Wear low-heeled â but not flat â shoes with good arch support.