Brazilian Waxing

So I got my first waxing on the 1st, I was wondering if I could go back sooner because i have some hairs that they couldn’t get last time that I think they could get this time. However, they recommend four weeks, but I was just wondering if anybody had experience or knew anything. I just don’t want wait 4 weeks because I plan on having sex this weekend and i don’t want shave because I know mess up the cycle of it. Any advice or know anything.