Cats sense early pregnancy ?

So we’ve been ttc #2 for a while now. I’m currently on my tww. My female cat has gotten very affectionate and protective over me. We have a 1 year old husky who jumped up on my lap today. The cat got up from where she was laying, attacked the dog then proceeded to lay down on my belly. Those with cats, how did yours act before you found out you were pregnant?