Gina, I wouldn't worry about her being sick as much as just a jealous little diva who wants attention. If she's having these accidents, maybe tying her to a long leash for a few days around the house will help you catch her in the act or be able to stop her from doing it. I know how you feel though. Sometimes Coco will pee like 2 inches from the pad, and that tells me she's doing it on purpose because she's unhappy about something. She's 100% potty trained but lord help me when she's a bit unhappy, like if I get home 1 hour after my usual time or if Rob isn't as playful with her as usual, stuff like that. Sensitive little buggers they are.
