Please tell me the world is not ending (suspicion of IBD)

I had IBS diagnosis but the diarrhea and pain was very persistent. Then yesterday i refused to eat coz i couldn't endure the pain and diarrhea so i went to a gastro today in private setting (yes hella expensive). The doctor was nice and took a lot of time to discuss everything she palpated and said "i think it's colitis" but she said it's too soon. She recommended tests like fecal Calprotectin, albumin, CRP. But I'm freaking out, i feel like my world is ending at the age of 25. I already have PCOS, eczema, anxiety, depression, Bartholin cyst. Now a one more diagnosis