fingers and toes turned blue during panic attack?

I have anxiety and sometimes have panic attacks, it's not often and relaxation techniques help a lot. but my dog passed on Sunday and I've been extra emotional since then. last night I felt a panic attack coming on and it sucked but seemed like, you know, a run of the mill panic attack. (cold, dizzy, numb, can't catch your breath, heart pounding, etc) only this time on top of the normal stuff, my fingers and toes went white then dark purple blue. it lasted for a few minutes then it all went away and my fingers and toes looked red for a little while, but everything feels normal now. my anxiety makes me think the worst so is this normal for a panic attack or should I call my dr? like I could see every single vein in my fingers until they all just looked blue. what in the world?? if it helps, I'm in my mid twenties and in pretty good health.