ISS is the ninth space station to be inhabited by crews, following the Soviet and later Russian Salyut, Almaz, and Mir stations as well as Skylab from the US. The station has been continuously occupied for 7008471909275000000â  14 years and 348 days since the arrival of Expedition 1 on 2 November 2000.
Low back pain during pregnancy is caused by lumbar pain and pelvic girdle pain. Low back pain is very common in pregnancy and 2/3rd of pregnant females complain of mild to severe lumbar backache.1 Half of the low back pain is caused by lumbar backache, which originates from lumbar vertebrae between L2 and S1.
Finally, your hormones and body changes have some effect too. Your body is getting ready for birth and so some of your joints and ligaments are loosening up to make delivery possible. All of these changes added together can cause back ache as an early pregnancy symptom.