Hello Loretta, I read your message and understood your medical problems. It is possible that you are infected while in South Africa. It looks like an ordinary gastroenteritis even though my advice is that you must do some other tests like stool culture in order to identify any other more serious cause which can be important for the public health too. The traveler s disease is manifested with the exact symptoms and some endemic infections found in Africa develop the same symptoms too. The good news is that you have run all the immunizations and the symptoms will be light and disappear without the use of specific drugs. Just take enough fluids to stay hydrated and take OTC drugs for the cramps (buscopan). If the symptoms go severe or new symptoms appear especially fever please seek medical attention. Hope this is helpful.