Smelling a little off down there

So I always pee after sex, had protected sex 3 weeks ago, wash properly with fem wash, drink lots of water, but I smell off. Im supposed to get my period, I'm actually late but that happens sometime, and maybe that's discharge? Do you ladies recommend anything? I did leave a message for my OB/GYN but it's Labor Day weekend so I know I'll have to wait. Mom is sleep and she is barely home because of work so she's not much help but she's a single mom so she works hard. I'm 15 and I don't really have anyone to help me. No itching or anything but just a weird smell. Thanks.