Could I Have an Infection in My Scrotal Sac?

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.

Genital warts do not affect male fertility.. Yellowish and sticky semen is normal and not a cause for concern.. Keep your genitals clean and avoid unprotected sex to prevent future infections.... 

A dermatologist should be consulted about your dry and itchy skin. The continued use plastic bags during masturbation may result in irritation and even damage to the reproductive system.

The possibility of your boyfriend's methamphe­tamine consumption leading to a failed urine­ drug test for you tomorrow is improbable. The like­lihood of drugs entering your system through his e­jaculation during intercourse is minuscule. 

You may have phimosis, a condition where the foreskin cannot be retracted because it is too tight. However, you will need to consult a urologist for an evaluation and discussion of treatment options including steroid creams as well as circumcision. To avoid disturbance and possible complications, this condition should not be overlooked.

It is not wrong, and is actually considered a healthy activity. To increase sperm count, some lifestyle changes may be necessary, such as increasing exercise, reducing stress, eating a healthy diet, and avoiding smoking and excessive alcohol. Additionally, some supplements such as zinc, Vitamin C, Vitamin E, and Folic Acid may help improve sperm count.