Hello dear, Understand your concern. I think diabetes is the cause of your problem. So first take regular treatment of diabetes. And control it. Do regular exercise and treatment of diabetes. For low sperm count, consult to sexologist. Once diabetes is in control, sperm function and ejaculation will be improved. Also note Following are the causes of erectile dysfunction: fatigue, stress, relationship issues, performance anxiety, alcohol consumption, diabetes, obesity, tobacco use, enlarged prostate gland. So please do health check up to exclude above causes. After marriage you can take following treatment. Take following advice 1. Start exercising, losing weight, stopping smoking and alcohol if you are taking 2. Tablet viagra 50 mg taken about one hour before sexual activity. It may be taken between 30 minutes and four hours prior to sexual activity. maximum dose of 100 mg daily or reduced to 25 mg daily. Do not use more than one time daily 3. Testosterone Replacement Therapy 4. Alprostadil urethral suppository-By applicator to insert the suppository into your penile urethra, erection usually starts within 10 minutes and lasts between 30 and 60 minutes. 5. Talk with your doctor 6. Do discussion with your partner after marriage that help in gaining psychological trust Hope this may help you. Take care