Flare without usual symptoms?

I've had UC since 2006, it was proctitis till 2019 when it went to pancolitis. When I had that 1st pancolitis flare, I got covered in angry rash. Also, after pancolitis diagnosis, in addition to oral mesalasine, I've been on constant maintenance with Pentasa suppositories (I'm in UK). So couple of weeks ago I developed the "bubbling" sensation along the colon - which was also a symptom of my last flare - so I added Salofalk enemas as a precaution. No blood, no urgency. And yesterday I broke out in the horrible rash again. So "only" 2 symptoms of bubbling and rash. Anybody experienced smth like that? Can THAT be a flare? I also have quite a bad cold at the moment... I'm doing Calprotectin test but it will be more waiting till I get results...Thanks for your input.