Does anyone here have anxiety disorders?

I do. And it's improved over the past year but now I feel like it's all came crashing down. Everytime my BF gets mad at me and I'm unaware why and he won't tell me, I get so anxious my hest starts hurting and I start sweating and my body sends me straight to the toilet to poo. Btw otherwise I had constipation issues but with anxiety and during attacks it all comes out..... I have IBS cause of anxiety. I'm supposed to be in my general biology class right now but I am sitting outside of the classroom and it started an hour ago and I just can't go in cause my anxiety is so debilitating. Idk what to say to my BF he doesn't understand. It makes him more angry when I cry cause he feels like an asshole. I want to go home after class instead of stay with him but I know he's gonna get really mad if I say I wanna go home. Idk sometimes I feel like I'm being manipulated in the most clever way possible and I am scared. Or maybe he's not but idk why he got mad at the thing he did.