I got back from a Disney cruise 2 1/2 weeks ago. I ve had diarrhea, nausea and some stomach cramping on and off since we got back. I haven t run a fever but just don t feel well. I dont have a GP- what anabiotic do I need to take to clear this up? The diarrhea has improved to moderate – but still has a bad smell. Normally it is extremely rare for me to have diarrhea & nausea – so I know I ve got some kind a tummy bug. I just keep thinking I ll get over it without having to go to the doctor. I have not had any vomiting, but have come close. I can t believe it s lingered this long and I m really sick of having to run to the bathroom.