Hi, i started out pumping my penis about 2 months ago. I've now stopped as i have noticed lumps appearining in places that are hard and small. They have now become itchy after about 2 weeks after i realised i had them and stopped pumping. I shave and at first i thought they were ingrowing hairs but there's a few on the end of my foreskin and when hard my penis is very rough over the spots. Do you think this is from pumping the reason they have appreared? I really can't see them being an STI. What should i do? will they eventually go? Thanks for the support in advance.