Backache is one of the most common pregnancy niggles
Stand with your feet hip-distance apart, making sure your knees are soft. Feel the weight of your feet on the floor and feel your trunk lifted and open.
Tilt your pelvis forward, your tailbone down towards the floor, and pull your baby up and in towards your spine. Make sure you have a natural curve in your back - it shouldn't be arched. Lengthen through the spine and aim for a nice straight back. Keep your shoulders back and down, and imagine you have a string pulling your head upright.
Work your deep abdominals
Breathe in and as you breathe out again, pull in your pelvic floor and the deep abdominal muscles. Lift the baby up and in towards your spine, drawing the navel to the back, then lift your pelvic floor muscles to deepen the contraction. Hold this position.
You can do this exercise standing or on all fours. If you're standing, check your posture. If you're on all fours, make sure your hands are in line with your shoulders and your hips are in line with your knees. In both cases, make sure you have a natural curve in your back. You may need to tilt the pelvis to align your back correctly.
Work your pelvic floor
A strong pelvic floor will improve your sex life
Breathe in and as you breathe out again, close up your back passage as if you were trying to prevent a bowel movement. At the same time, close up the front passage and draw the muscles up and in, as if you were trying to stop a flow of urine (but never do this when you're actually on the toilet as it could increase the possibility of infection). Contract the muscles to a count of three - imagine a lift going up, one floor, two floors, three floors.
When you get to the top, hold and squeeze, making sure you keep breathing. Hold the contraction for five to ten seconds, then slowly and gently release the contraction. Repeat as often as you can (at least ten times a day).