Overactive bladder and IBS. Travelling?

Doctors - 2 years back I was detected with UTI, but later ruling all other symptoms and tests I was detected with overactive bladder and then later developed INS too because of stress. However, is been 2 years and I have tried all medicines like Dariten 10mg for overactive bladder and Rifamaxin for IBS. However I still have the symptoms when I I go out in places where I cannot assure myself that there will be washrooms available readily. This fear has led to loss of social life and lack of travel. I have also started avoiding business travels and have been affected by the job now for a long time now. It's been 3 years and nothing has seemed to work out. Whenever I go out I feel like I would leak or pass stools. I take a loperamide (Immodium) whenever I have to out but urine is still avoidable. I know there is no cure to it but still can anybody help me relieve symptoms while travelling? Specially happens before leaving home and worry of not having washrooms around.