I have pain around the opening to my vagina. it's itchy, burning, and red. i have no unusual discharge or smell. what could this be and what do i do?

See your doctor: You could be having a reaction to something you have come into contact with, (change in hygiene or laundry product), or a yeast infection. It is best to see your doctor to make sure it is nothing serious, and he/she will most likely prescribe a steroid cream to treat it unless it is an infection, then you will need antibiotics.