Hii dear, dont panic. Having pain in liagments (joints) is a common symptom while pregnancy. Few people will have few symptoms. When your baby starts expanding in the womb, our body will experience few harmonal imbalance and changes. When your tummy increases the whole weight will put on your spine you may experience more pain. Dont eat brinjal and potato regulary have weekly once or twice. Have some bedrest. Dont lift heavy weights, dont rush, walk slowly, dont bend, and dont sit without support on your spine. Take care.