Cause and effect is always a tricky one with this sort of thing - particularly as there's been a lot happening over the past days and weeks at Google.
It's not impossible that you'd see a "sandbox" type effect with new links, but I wouldn't necessarily expect it to happen in the situation you describe. But anything perceived as unnatural can be met with an "unnatural" response in terms of rankings.
To skip ahead a bit, in terms of what should do, I would suggest you just need to wait it out. In the meantime, it wouldn't hurt to do a general review of your site as a whole and a look at your backlinks, so if you end up with a long wait, you'll be prepared for action, and it never hurts to take stock once in a while.