Helppp..the inside of my is bumpy? Girls only?

Well I was looking down there, to see where to put my tampons in, (no, i'm not a perv) and like..my is lumpy inside. it looks so weird, like...it looks really rough..like the surface of a meatball o_o sorrrrryyyy tmi!!! but i can get tampons in just fine, so what is this?