I've been feeling a bit under the weather lately and have just finished having two weeks off work. (Go back on Monday, boo hoo.) I had an "everything" blood test last Monday and the results are back. GP wants to see me on Tuesday. Not a nice thought. My blood pressure was up a little bit - for me, as I usually have low blood pressure. So perhaps the result has something to do with cholesterol, but there again it could be thyroid (which the GP particularly wanted checking), iron (I have B12 injections), or something else entirely. It's the not knowing, isn't it!
On the positive side, at least once you know what the problem is you'll be able to begin treatment to put it right. I imagine just the waiting must be enough to put your blood pressure off kilter!