<s>[INST] HelloI had rigid cystoscopy day before yesterday. Last night my penis attempted to ejaculate but i felt little pain and it woke me up. I felt like it was climax but seemen did not come out. It happened twice last night. What do you suggest? Is there any problem? I am feeling no burning sensation and no pain even while urinating.Please answer me! [/INST] Hello and, Instrumentation can cause injury to the lining of the organ, In case of cystoscopy the scope could have caused mild damage to the lining of the penile urethra. The mild superficial injury could be the cause of pain during ejaculation. Absence of pain or discomfort during urination rules out infection or any other lesion in the urinary tract. Do not worry, the pain will fade away within few days. If it doesn't you need to consult your urologist. Thanks and take care Chat Doctor.  </s>