i’m 14 and i’ve got pretty bad acne on my face and i’ve been working as an assistant swimming teacher since october and since then i’ve had really bad acne in my upper back and shoulders, it scars and some of the spots can be really painful. could it have anything to do with swimming?(i do have to get changed in a rush), what can i do to help it?

I use aloe vera gel, witch hazel and i exfoliate about once a week, but it’s getting quite hot now but i feel so swlf conscious to wear a top with thin straps so i really want to clear this up before summer!!