I'm at the end of my fertile week and I think I feel a UTI coming on...

Is AZO safe to take while TTC? I know that even if I do conceive this month, I wouldn't share a blood supply with the baby for a little while yet, which means it should be okay, right? I just don't want to do anything to chance it. I'm not even 100% sure that it's a UTI, but I want to catch it as early as possible if it is. Any experiences to share? TIA!