It is very common to get backache. During pregnancy, the ligaments in your body naturally become softer and stretch to prepare you for labour. This can put a strain on the joints of your lower back and pelvis, which can cause back pain.Also there is various hormonal changes takes place in your body and due to baby bump the weight shiftes to the front and leads to leaning backwords to regain the balance.
So there is no need to worry :) unless the pain is severe and lasts for more then 2 weeks with unusual cramps.
Next Steps
Stretching the lower back.
Sleeping on the side with a pillow between the legs and below the abdomen.
Using a warm compress to relax tight muscles.
Postural changes, like standing and sitting upright, so the back is straight.
Can wear a maternity belt for extra support.
Use a lumbar pillow while sitting.
Massage to relax tight muscles, improve range of motion, also helps in relieve pain.
Reducing stress through meditation, prenatal yoga, and strengthening exercises like (under supervision)
-bridging
-pressing a towel roll beneath the back
Getting enough sleep.
Good diet. ( see a dietitian)
Minerals and vitamins supplements (see a dr)
Consult a good physiotherapist
Health Tips
Avoid long standing
Avoid long sitting
Maintain a healthy weight through diet
Doing gentle exercises
Dont panic
Wear a shoe with good cushioning and support
Avoid lifting heavy objects
Do practice wall squats with support under supervision
Avoid sleeping on abdomen