I am a 34 year old female, 56  158lbs.  I have been experiencing twitching (almost like fetal movement) for the past month.  In addition to the movement I have had lower back pain and bloating.  I have had my period every month so do not think that I am pregnant.
Hello! Welcome to Chat Doctor. This can be due to infection causing inflammation of bowel & pain. But as you have mentioned lower back pain, it is more likely due to a stone in urinary tract. This stone causes obstruction to urine outflow, so smooth muscles in urinary tract contract excessively to overcome this obstruction & so is the pain. Many such patients come to my clinic to whom I advise ultrasound abdomen & pelvis, X-ray PUB, urine routine, renal function tests & CBC. For temporary pain relief, smooth muscle relaxants like Chat Doctor. Definitive treatment is done accordingly. Hope this helps. Wish you healthy life. Thanks. Regards.