sir,i have a prblm in my dick from 2 days,sir pehle dick normal tha,but kuch days se jd dick k top ko upper se niche ki aur krta hoon,to hlki si pain hoti hai,nd dick jab hard ho jata hai nd fer buhat muskil se oska top k mass upper se niche hota hai nd buhat hi jyanda tight ho jata hai nd pain v hoti hai hlki si,plz tell me solution