vintagequeen is right, i had the same problem when i first shaved down there and was really embarressed. but its best to tell you parents these things, it will make them feel more important and wanted instead of being pushed away.
if it is from shaving, they could be ingrown hars, and hairs that are trying to grow back but cant push through the skin, causing red lumps with pus. the best way is to get a shower scrub and exfoliate everyday after shaving in the shower. and they sell certain moisturisers for bikini lines. :)
if it isnt, id surely recomend you see your doctor, its very important that you keep your body as healthy as you can :)
hope all goes well darl :)
Hope you get this taken care of very soon dear!!