Getting a backache or back pain is very common during pregnancy, especially in the early stage. During pregnancy, the ligaments in your body tend to become softer and stretch to prepare you for labour. This, in turn, can put a strain on the joints of your lower back and pelvis, which can lead to back pain.
If your backache gets worse, talk to your doctor. They may refer you to an obstetric physiotherapist, who can further guide you and recommend some helpful exercises.