Hello Andy91x,

                          finding stale blood in your stools is never something  not to worry about,so thank goodness you are getting it seen to shortly. l take it that alongside taking a lot of ibruprofen you were taking a buffer such as omeprazole to protect your digestive tract. l can well understand your GPs response since they shun the long term use of this painkiller, what you took as being rude would have been meant as the strongest warning possible as to the potential damage this can inflict, to that end it has certainly got your attention.

The most important thing now is to find out the cause of the bleed,and should that be the "rude" doctor doing the investigation l for one would be very relaxed since l would prefer it to be one on top of their game and taking it seriously  not dismissively, and from your description that would certainly point to that happening. Try not to overstress and prejudge any outcome and focus on the positive about getting answers and treatment, or indeed just change of medicines if they turn out to be the cause,

            Hope it goes well for you,

                                                      David