Please help i am depressed after this red bump on for 2 days penis is it STD or Ingrown

I need to go to doctor but just curious its getting little bigger . i shaved my pubic hair and cleaned it . i have this issue its looks now quite compare last few days if touch little pain. i dont know is it ingrown or STD

it may just be a blocked hair follicle seee if it clears up if not visit your doctors