As Jake and Shannon both said, it's when you feel ready - properly ready, not just need-to-be-in-a-relationship ready - that counts. For some people, that can be a matter of days; for others it can be a lot longer. There is no hard and fast rule, and it all comes down to how you feel about it and when you're ready. There's no rush, but at the same time don't feel as if you need to have a cooling-off period from it or anything.
Best of luck.
