As some of you might know, I lost my beloved cat Thursday & am going through hell!!

Yesterday I had uncontrollable shaking on & off & I know that it was because I was in shock (Lady my cat, died very suddenly) & I didn't have much to eat. Only had two hours sleep last night which is to be expected due to the circumstances. But am having uncontrollable shaking again tonight. I wasn't worried about it, now all of a sudden I am because I have had a little to eat today, but didn't shake today, just come on tonight. Do you think its still shock or anxiety or something else. Is there a physical illness where your body shakes without any other symptoms? Every now & again the shaking stops abruptly, but then comes back again!

Anyone got any ideas please? I would be grateful.
Thanks.
Els