How do I get her to stop peeing on my bed

I’ve had her for for one week now, she got used to me pretty fast, always runs up to me and boops my feet or my hands, she is free roam and recently she discovered she can jump on my bed and a few times I’ve discovered pee on my bed, how do I tell her to stop? She is potty trained and only does her business there, except when she’s on my bed. She’s not neutered yet because she’s too young, she’ll be 3 months next week.