Can cats sense pregnancy?

I have moved in with my mother in law throughout the whole pandemic. She has an indoor cat who is the sweetest thing ever but doesn’t like being clingy and is very spoilt in the sense that he gets his way. it took a whole year for him to be comfortable with me.

I will feed and give him treats and the most affection hes ever shown me is sit on my lap for 5-10 minutes and then move.

But recently hes started sitting on my lap longer and has started following me around the house.

Now today, whilst sitting on my lap he put his ears against my bell and started rubbing his head against my belly? I haven’t taken a test yet but i was just wondering if cats can sense pregnancy I am 7 days late on period. I took a test on day of predicted af but it was negative.

I have been feeling slightly nauseous throughout the day and have had back cramps since yesterday.

Has anyone’s animal ever done that and they ended up being pregnant?