<s>[INST] 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? [/INST] Hi sir/madam, 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 back)4. Daily Stretching. Hope I was helpful. Have a healthy day. </s>