Peeing outside of Litterbox

Clover is about 9months old, she's yet to be desexed, and she's litter trained, but the passed two weeks she's started peeing in my room. First on my boyfriends jeans, then my rug, now twice on the bed. A few days ago I took her to the vet after a rat bait incident, but this has been happening since before then. I've also recently started a new job, it's only two days a week for now but I was wondering if that had something to do with it? At my old job Clover just hung out at home with mum, but now I live with my sister and her kids so could it be because they don't bond with her as much? Please help!! I've have to wash ALL my bedding twice in 24hrs

I take it that you've recently moved from your mother's house to your sister's. That move by itself can cause pee problems in some cats. It sounds like she's feeling terratorially insecure and possibly a bit stressed. By peeing on your bed (a place that smells very strongly of you to her) she's trying to mesh your scents together to convince herself that it's her home too. Feliway diffusers could well help her stress levels, and daily interactive playtime with you (ideally mimicking the hunt-kill-eat cycle) will build both her self confidence and confidence in the new territory.

These articles may help :-
http://www.thecatsite.com/a/cat-play-the-rules-of-the-game
http://www.thecatsite.com/a/playing-with-your-cat-ten-things-every-cat-owner-needs-to-know
http://www.thecatsite.com/a/separation-anxiety-in-cats
http://www.thecatsite.com/a/six-surefire-strategies-to-reduce-stress-in-cats
http://www.thecatsite.com/a/litterbox-problems-in-cats-the-ultimate-guide