[g-funk]

Getting reassurance for your hypochondria is not the way to go. Trust me. Its like a drug, the more you do it, the more you need to satisfy you. If you get the tests done, you will be satisfied only until the next ailment crops up that demands an explanation. If you feed an obssession, you only make it worse. Its so addictive, I know this because I am a total obsessive. If there is nothing in particular that you are worried about your health, then don't go looking for trouble, if it ain't broke, don't try and fix it. If there is a particular family history of say, breast cancer, then have the recommended check ups etc but don't obsess over it because you can't protect yourself this way, you will only make yourself feel worse.
If it is a genuine health worry then go for it, but you said in your post that you knew it wasn't, so believe your own words! You can't stop yourself from getting ill by being 'prepared' for every eventuality or by monitoring yourself all day long.

You don't need the tests to settle your mind or help you understand that it is anxiety based, because you already know this - why would the doctor telling you that make any difference? If the understanding or reassurance doesn't come from within, it will only be a short time that your mind is settled, and you turn to the next external source of satisfaction.

That sounded a bit harsh, I didn't mean it to! Good luck - I'd be interested in other people's opinions on this - any other obsessives relate?