You may have two coexisting abnormalities in the scrotum area (one called hydrocele and the other called varicocele). These two conditions may give rise to discomfort and swelling, especially when you're on your feet for a long period. Hydrocele is the consequence of fluid buildup, while varicocele occurs when the veins are abnormally enlarged. Treatment can be topical or surgical if there is a need to operate. 

It appears you may be having a condition called frenulum breve, where the skin under the penis head is very narrow. This could cause pain during intercourse. The pain from your previous cut might have made it tighter. It is something that you should discuss with a doctor so that he could guide you through the different options like stretching exercises or to fix this issue through surgery.

It needs to be examined before any ointment is suggested. if it’s just fungal Infection then might just do with anti fungal ointment, if any inflammatory lesion then needs to know the reason behind it. Rare cases if long term redness then might need a biopsy.

Chronic prostatitis brings pain in the pe­lvic area or when urinating. It causes fre­quent urination and difficulty emptying the bladde­r completely. Bacterial infe­ctions or inflammation of the prostate gland often cause­ it. If a bacterial infection exists, antibiotics tre­at it. Warm baths, drinking plenty of fluids, avoiding irritants like caffeine­ helps manage symptoms too. Follow your doctor's advice for prope­r treatment always.