dae get a "falling" sensation from anxiety ???

i sometimes notice if my anxiety is really bad or if i am having an off day mentally (which then affects me physically..) that i will get this "falling" sensation sometimes. the best i can describe it is an elevator drop but i am not even in an elevator. it is scary and worries me, but i am not sure if anyone else feels this way. my anxiety is more physical and i have hyperchondria, so i am overly aware of my body at times which i am not sure also contributes to this. does anyone else get tnis ???