Hi and welcome to Healthcaremagic. Thank you for your query. I understand your concerns and I will try to help you as much as I can. Well, epididimal cyst when burst, may bleed a bit and this is obvious reason for blood in cum so it should not be concerning sign since in most cases it resolves spontaneously. So you just need to be patient. If there is fever and penis discharge then other causes may be considered such as STD or prostate hypertrophy. ALso, active epididimitis which is inflammation of part of testicle may be present. This is usually treated with 10 days of antibiotics, usually ciprofloxacin and there are no permanent consequances. MAsturbation and intercourse should be avoided till pain persist, if possible since I may prolong inflammation course. Some more serious conditions such as tumors or torsion are rare but in doubtful cases you should do Doppler ultrasound or scintigraphy. In this particular case, I don’t think this is required. I hope I have answered you query. If you have any further questions you can contact us in every time. Kindly regards. Wish you a good health.