Gush of red blood


I have a couple of questions. I haven't been to ER because they didn't really help. I've had brown spotting that's gotten heavier over 4 days, then last night i felt a gush and looked and it was bright red blood. It's stopped now and gone back to the brown discharge? And i have cramping on my right side every now and again, what could this be? And also my kitten scratched me. I put betadine on it. Will it cause any problems? I have an appointment tomorrow. I'm about 4/5 weeks xx