Captainkarl... i can relate to how you feel I am also keen to get started on my flight training, but the medical is the only damper to my enthusiasm. A few years ago, i started getting heart palpitations which warranted my doctor to send me to a specialist. After a halter ECG and the routine tests, the results were inconclusive other than the fact that i developed tachycardia at irregular times. My faith in the medical profession wavered, and i left it at that, but the palpitations continued, and got worse when i went through a very stressful period. Also have a family history of diabetes but thankfully have not developed the condition as of yet. I am very apprehensive of the initial medical, which i am certain, will pick up this condition, and the idea that:
1. I will be prodded at like a guinea pig waiting to hear the ominous news and
2. the possibility that my flight training may be nothing more than a passionate dream unfulfilled
beechgal,
You're being a touch histrionic here. There is nothing in what you have said which will definitely prevent you getting a Class 1 medical. I don't think you have reason to be particularly apprehensive of your initial medical, based on what you have said. It is highly unlikely to pick up diabetes simply because you have a family history of it. The palpitations need looking into, but may turn out to be nothing serious.
(Only Type 2 diabetes, which comes on in middle to old age, runs in families. Type 1 diabetes, which affects younger people, does not.)
If you seriously want to become a commercial pilot, go and try for the Class 1 medical. On the other hand, if you are getting in such a state about the medical, perhaps you do need to ask yourself if you are temperamentally suited to being a professional pilot. (Whirlybird will tell me off for saying this, but I think it is worth mentioning.)
QDM