What should we do about my girlfriend's spotting while on the pill?

She's been on the pill for 9 months (give or take) and she's been having breakthrough bleeding. She was switched to a generic brand a few months ago by the University clinic; it's diminished her drive and this month, halfway through her pills, she's had spotting and also said she's been dizzy. It started on Saturday. Could this mean she's pregnant? What should we do about this? We can't really contact the University clinic since it's far away. Where else could we go?