ok mommies. i will be 30 weeks tomorrow and am still working full time. sometimes 7-8 days in a row. my son was 3 pounds 1 ounce at his ultrasound like 2 and a half weeks ago. it was also discovered well about 3 days ago i developed excruciating back pain. nothing relieves it sitting back, laying down, standing up...whats crazy is the more the baby kicks the more i hurt. any advice?!? other than tylenol for the pain.