I stay in Australia since 4 years. Since almost a year I am experiencing some hard bumps on my penis head which is sometimes irritating. It feels hard on the tip of bumps when i touch it. I am not sexually active. I have also consulted my GP he examined all the tests including STD, UTI etc. and all came negative. He suggested me to apply clotrimazole. I applied it for 2 3 weeks but it kept increasing. I am very much worried about it because soon I am going to get married and its a feeling of embarassment. Please let me know what it is. I am attaching the pictures.