Is mixing natural supplements safe to treat a uti?

After years if taking antibiotics that I seem to have grown resistant too. I am trying natural remedies to prevent the onset of a UTI. I am taking Dmannose, cranberry juice, oil of oregano, probiotics, and apple cider vinegar. Is it safe to take all of these together?
Thanks for the advice. I have been to a urologist because I get a UTI every single time I have sex. This has been going on for years. The doctors tell me that my anatomical structure is normal and I have never tested positive for E-coli so this is not a hygiene issue – and trust me, I have tried every precaution I can. The doctor told me to take a low dose antibiotic after sex and now that isn’t even working anymore so I am trying to explore other possibilities before I give up.