Waterproof way to cover hickeys?!🙏🏼

Maddie • 16 & happy☀️
So my boyfriend gave me hickeys all over my chest/boobs and I thought it would be fine but about 2 hours later I got a text inviting me to the lake with a pretty conservative family on Monday (2 days away) that would definitely freak if they saw!! Is there any way to cover them with makeup and somehow make it waterproof? Anything helps!😁