Height-5'7 and weight 127 pounds. Is that normal?

Male - Female ? Sounds like you are within a normal range whether you are male or female. Roughly - for females (low end is 121 pounds , mid - 135 & high end is 149). Males - (low end is 126, mid range is 140 and higher end is about 154. However if you had a lot of muscle, higher weights may be fine.