8 weeks and suspecting I have a UTI?

Been noticing lately that when I urinate I feel like I really have to go, but end up only peeing a little bit. I also been having ba aches throughout the day.

I have an appt on Wednesday. Would it be okay for me to wait?

Symptoms I’ve been having

Fatigue

Lower back ache

Urge to pee, but don’t pee much

Any ladies with experiences please feel free to chime in...