As most people have already said, I shouldnt worry too much. I went for an RAF medical a few years back, and the Doc said I had a heart murmer. He explained that they're often nothing to worry about. I had a few more tests, and nothing was wrong with my ticker, and I've had no problems since.
I already had a class 1 medical at this point.
Having said that, without wanting to worry you, there is a slight chance that something may be wrong, so just in case, the best thing to do is have a word with your Doc, and speak to the CAA Doctors at Gatwick in order to get a professional medical opininon (instead on one from a Pilot!)
Number for CAA is: 01293 573700.
And email for the medical section is:
[email protected]
I'm sure they'll point you in the right direction etc
I know It's worrying-I've been there!
Best of Luck!