Are camel crickets poisonus to cats?

My cat has been eating camel crickets in our basement. My cat has been acting erratic and jumping around and acting a lot more aggressively then she usually does. Tonight she has been throwing up occasionally (six times) and, well, the contents are cricket parts. I am not sure what to do. I am really worried about her. Also her heart seems to be pumping very fast. This used to be a very mellow cat. I don't know if I should wait until Monday to take her to the vet or take her to the kitty ER tonight.