Will a uti clear without a prescription?

Almost always: Utis are generally self-limited, they clear by themselves. If not, imagine what would have happened to women before antibiotics!

It might, try this: Lowered immunity can cause UTIs. Taking a zinc supplement 50 mg/day (with food), vitamin D3 ~5000-10,000 IU/day, and a good probiotic daily might help solve the problem since they boost immunity and reduce pain and inflammation.