Help me

so i got this weird bump kinda hurts i was squeezing it and it hurt really bad but it swelled up even worse and now it looks different i just had a baby a couple of weeks ago so i would think if it was an std they wouldve given me those results by now but i did just recently shave should i be worried what do you guys think first pic is before i gave it a squeeze second pic is after i gave it a squeeze (noting came out) and the last pic is the day after i gave it a squeeze