<s>[INST] im about 17 weeks pregnant and i woke up yesterday with horrible lower back pain in the tail bone area and it leads to my hips, im still in pain weather im sitting, laying down, walking, or standing. Is this normal? should i be worried about my child? [/INST] HI,    Thanks for the query.     Pain in back in pregnancy is mostly due to looseness of pelvic ligaments due to pregnancy hormones/ calcium deficiency/ vitamin D deficiency or pelvic infection.     Get examined by a gynecologist to exclude/ diagnose  infection followed by treatment as per need.      Calcium & vitamin D supplementation help.       Exercises to strengthen the pelvic muscles  ( which can support the loose ligaments ) help in pain relief.)      Pain killers can be taken in early stages, while other things start working.     Thanks. </s>