Take a hydrometer reading after a couple weeks. 4 or 5 days later, take another measurement. If they're the same, you should be fine to bottle. It's never too late to collect data.
Keep in mind, even though gravity is stable, that doesn't mean it's ready to bottle. There are lots of intermediate metabolites created during fermentation that the yeast will break down after gravity is stable, such as diacetyl. So don't be in a rush to bottle - usually 3 weeks from brew day is a safe rule of thumb. But let your hydrometer tell you.