Wondering😦😦😦

We always Want a child but now not ready any more. So when we were having sex and he cums and now pulling out we realize the condom has broke, I don't know if glow is accurate but the day it happen was my highest chance of getting pregnant.... I didn't take any emergency pill. Can that one time cause me to get pregnant? Can I still take the emergency pill? If am pregnant how soon will I know and what are the earliest symptoms? Please help am really worried.