I tried tylenol (acetaminophen) sitting in hot bath n drink hot milk n get massages n heating pad n still hav severe back pain I'm preganant n what else can I take : (?

Hard to say but... This is hard to answer without more details or even without examining you, but it would be totally safe to add 2 cups of epson salts to your hot bath to get magnesium into your body, which often helps. Consider seeing a physical therapist and/or good osteopath (who does osteopathic manipulation- see http://bit.Ly/1kgd0xp) or good chiropractor. Acupuncture can help as well. Consider prenatal yoga.