Low back acidity and frequent urination after ovulation is a very common phenomenon. It may be a normal physiological reaction or a pathological phenomenon. If this phenomenon persists or worsens, you may need prompt medical attention.

However, if this phenomenon persists or worsens, you may need prompt medical attention. This may indicate that you are experiencing some pathological condition, such as a bacterial infection or inflammation. In this case, you need to be diagnosed and treated by a doctor to reduce symptoms and avoid further health risks.

Additionally, if you're trying to conceive, you may want to pay special attention to this phenomenon. If you experience low back pain and frequent urination after ovulation, along with other symptoms such as nausea, vomiting, headaches, etc., you may need to consult a doctor to ensure that your health is suitable for pregnancy.

Therefore, if you feel unwell or are concerned that you are experiencing a health problem, it is recommended to consult a doctor promptly. Your doctor can develop an appropriate treatment plan based on your symptoms and physical condition to help you regain your health and improve your fertility.