<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello there. I am a 56 year old woman and in good health. About 2 weeks ago I was diagnosed with a kidney infection but, the doctor was unsure. So they gave me antibiotics and the pain in my back moved lower on both sides. Now I have mild crampy pain on both lower back sides and front. sort of like period cramps but, I went through menopause 8 years ago. This morning i had quite a bit of blood in the toilet when I went poop this morning. 2 other times in my life i had a slight tear that caused a little blood on the toilet paper. This was different. There was a lot of red blood. I could not tell if it was in my stool or on my stool. I have had no blood when I have urinated throughout the day today. However the cramping is persisting. Any suggestions?  <response>: Hi sirmadam, Thanks for your question on Chat Doctor. Common Causes of Lower Left Back Pain:-1. Bulging or herniated discs.2. Muscle spasms.3. Pulled back muscle.4. Muscle imbalances.5. Muscle strain, injury or trauma to the back muscles, ligaments or joints.6. Trigger points.7. Stress Negative emotions. If lower left back pain is particularly severe, it may be an indication of a herniated or ruptured disc, or sciatica. Recommended Treatments for Lower Left Side Back Pain:-1. Muscle Balance Therapy.2. Massage Therapy.3. Trigger Point Therapy.4. Inversion Decompression Therapy.5. Acupuncture Acupressure.6. Use a Back Support or Cushion.7Relaxation, Meditation.8. Dietary improvements i.e. reducing foods that cause inflammation like dairy, wheat gluten, sugar, nightshades.9. Chat Doctor. Left Side Back Pain Prevention:-1. While walking and sitting, keep a relatively upright posture2. When lifting objects heavy or light, always lift with the legs-never bend from the waist3. Exercise; focus on working out the muscles in the core abdomen and back4. Daily Stretching. Hope I was helpful. Have a healthy day. 