Welcom to FT. There are many previous theads on this topic, and the general wisdom is that you'll most likely be OK. As with all free advice, take it for what it's worth and use your own judgement - we're not telling you what you should do...

That having been said, the conventional widsom is that the safest route is to just not show up for the flight, don't call, don't cancel, don't request credit later, don't check in for the flight, don't say anything, just don't show up.