Bumps in the beginning of ?

okay so today i was sittin in cl and i got like this irritatin itchy feelin down there. when i got home i decided to check it out, and inside my like directly inside theres bumps but they aren't like blisters they just look like normal skin so i was wonderin if this could be anythin or if it could be just natural nd i just had a itch? sometimes i do get itchy down there and i just got tested for gonnarea nd chlaymedia in march nd havent had a new ual partner since. so i don't think the itching is from either of those. but yeah like i said my question is: is the entrance to the like at the top sometimes bumpy ? or is this irregular?