Pets sensing pregnancy?

Does anyone believe that pets can sense a pregnancy before we can? My girl cat has never liked being held or even touched for too long, she absolutely does not cuddle whatsoever but she just curled up in my lap for a solid 5 minutes. Do you think she could sense a pregnancy? I’m only 3dpo so there isn’t really anything for them to sense I wouldn’t think? I just find it weird is all haha