Minor hamstring pull, can I keep going at easy pace?
Probably best to see a doc.

But it would probably work to lay off for 3-4 days (at least until you can gently cycle without immediate pain), then start up again, being careful to limit the stress on the area.  If your pain level stays low then SLOWLY work up, otherwise back off or stop (and see the doc).

You should probably find some stretches (from a PT or maybe on the web) to "balance" the muscles in the area.