I would give it about 10 days from the "check processed" date and then contact them. Bestmark is pretty good about working with it's shoppers. They'll probably tell you that you can either pay their bank's check-cancel fee and have it reissued or you can wait for it to expire and have it reissued. Either way, anyone I've dealt with over there has been very nice and totally willing to do the research/explaining necessary to resolve my issues.