I am experiencing vaginal itching and bumps, it started after I had sex a week ago and now the bumps are all over and itchy it looks like razor burn. I just need someone to tell me what it is and what I should do

Is it razor burn? Do you shave there?

But if it started right after sex, then most likely it is a STD or infection you got from having sex.
Time to go to the doctor and have it checked

Did you use a condom? Is it possible you have a latex allergy?