Ultimately, you will be fine, just keep an eye on yourself, as you should always be doing anyway, if you start feeling off, then re-assess the situation.
When I say feeling off, I mean chronic feeling off, not feeling a bit knackered during a hard training phase, this is normal and a part of over reaching. Don't fall into the over training trap, the magazines etc have everyone paranoid about over training, so people panic and think they are over training when they are simply tired from over reaching! If you over reach you will feel like crap for short periods of time (a week or 2), but as you recover during an easy week you will then feel good. Over training, is different, when you back off, you won't feel better short term.