I am just getting over a yeast infection in my penis, and have been on a cream prescribed by my doctor for the past 10 or so days. There s now a large pump on my penis on the foreskin that has what appear to be small cuts in it. Could it be chaffing? I have had sex and masturbated a couple times over the past week or so, and the spot seemed to have itched more when it was hot and humid out. A bit of research, and I found it could be Penile Lymphocele. Im not all that worried about STD/STIs, my girlfriend and I have both been screened and are clean.