anxiety help!

I have horrible anxiety! I mean the smallest thing sends me into a panic attack. I don't know what to do. it's really weird. in example earlier I hurt my wrist. I probably just sprained it because there is no swealing no bruising and I can still use it. I just feel a little tingle of pain. automatically my mind goes bazerk and I think what if I broke it and I get a clot and it goes to my heart and I die.... typing it makes me feel like it's so stupid. it is stupid. but in the moment it doesn't seem stupid. how do I fix this? I just want to cry my eyes out.