Hey, I am wondering my bf's cat diamond who is around six years old or about.....she in these past two or three days has been having trouble pooping....im not sure about urination....we can see her going in the litter box numerous times throughout the day for two to three days straight now...she is constantly seen going back and forth to the litter box and i believe i saw her poop a bit two days ago and the rest of the times it is nothing she squats and nothing comes of it and she seems more lethargic, and doesn't seem that interested in food, she pecked at some food yesterday but did not really eat eat...and does drink water...she was shaking a little last nite and normally she is ok looking....we are super worried about her and am not sure what could be wrong with her,,,,can anyone shed some light on this issue??