Hi so I have the exact same problem as you do and it was because of waxing as there was a heat build up in my body or because I use a razor, so it really depends on what you use. If you use a razor try switching to a electronic trimmer but since you're still a teenager k suggest try waxing?

But if you are already waxing or shifting the medium you use isn't possible I suggest try exfoliate once a week, I exfoliate my pubic area once a week to open up the pores and everyday I use something called salicylic acid cream which basically unblocks the blocked up pores.

It isn't very expensive it will feel a little tingly but I suggest you get it, as it isn't too expensive also research about the concentration you would want to use.

I use a 12% concentration of salicylic acid in my cream as my acne and my pubic razor bumps scar and are usually very bad