I Have A UTI And Taking AZO Until I Go

I have a UTI and taking AZO until I go to the Doctor tomorrow. I was setting when my heart started racing and a feeling of flutter in my chest, I checked BP and heart beat, it was 156/94 and heart beat 96. I've also been drinking about 24 oz of cranberry juice today. I tend to have low sodium. ? will the AZO and juice flush too much sodium out and cause the fast heart beat?