Razor bump disaster

Abi • 19💎ur average bookworm and Nursing student ;)

Okay day 1 post shaving is always okay but then bumps develop and some I have to pop to get pus ouht like pimples and some dry up with flaky skin and become dry and white and some are just there and painful. Why does this happen and what can I do. I’ve attached a pic of the bikini line