Pregnant 3 months left side waist aches how to return a responsibility

Pregnant about three months left shows lumbago, can be caused by a variety of reasons, most common are the following points: first, myofibrositis, pregnancy is a normal physiological process, can cause a series of endocrine changes in the body, showing muscle aseptic inflammation, causing pain phenomenon, waist muscles rich, easy to show waist pain, can be physiotherapy, hot compress to relieve symptoms; Second, calcium deficiency can also cause waist pain, fetal development of calcium demand is large, pregnant women consumption is also very large, so most pregnant women will show calcium deficiency, resulting in waist pain, need and calcium supplement; third, the presence of kidney stones can also show waist pain, need to be diagnosed by ultrasound.