Lumps on scrotal skin with puss n blood.

Greetings to you doctor. i m having nearly some 20 little lumps on my scrotal skin..out of then 2-3 of those lumps are in 1cm - 2cm...and the remaining are in 1 mm or 2mm. i m having these on my skin from nearly 7 years. i get no pain.when i press them it squeezes white puss and at last some blood. sometimes even without pressing it enlarges and if i press blood and puss comes out. is that cancer doctor.i am 23 year old and i didnt participate in any sexual activities. previously i used to masturbate and then i stopped. i have attached the pics..please do observe and say me. i m very scared of them.sometimes when i see about them in net they say that it might be cancer...please do recommend any medication to get rid of them.