<s>[INST] HI. I'm having lower back pain, headache and brown goop coming out my  ( I'm a girl) and very nauseated. I was just at the hospital 2 days ago but not for this. I'm looking for the next step. What do I do now? And what could it be? Please and thank you. [/INST] Hi, The low backache is mostly a posture related pain. The headache and nausea can be related to gastritis or electrolyte imbalance. I hope this information has been helpful for you. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Praveen Tayal, Orthopedic Surgeon </s>