Although this could be cuffitis that wouldn’t be my first guess. The blood could easily be from the straining, leading to hemorrhoids, leading to bleeding. The easiest thing to do right away would be to try a more conservative diet, as you are planning, and see what happens. Adding some probiotic-rich food, like Greek yogurt, might also help (if that’s available). I don’t think you’re likely to be in any immediate danger - you’d get plenty more warning, including pain, if cuffitis were escalating seriously.
This could also be pouchitis, which is pretty easy to treat if moderating your diet doesn’t work. Your doctor might be available for a video visit from anywhere in the world, and in some places Cipro is available over the counter. Good luck!