you need to see a specialist. i would go to a urologist. this is something that needs attention now.
very very small lump on testicle. about 4 months back i noticed a big sack of fluid growing in my scrotum i visted the gp and they did a ultrasound to find out that it was just a cyst. but recently after doing a full testicle check i noticed a very very small lump near the top of the same testicle. i thought that it could be cancer but most of lumps and bumps which are cancer don't look/feel like mine. mine feels like you engraved a full stop onto my testicle. i was wondering whether the ultrasound would have seen this before?