Please help! Spotted a lump on my penis under the shaft

i had a shave about 1 week and 4 days and i noticed i had a lump on my penis didnt think anything of it, im so stubborn i wont go to the doctors as im embarrassed and scared. its only painful/uncomftable when i touch it, could anyone give me a few things what it could be saves wasting dr's time? thank you

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