Depends on where the clot is and how big it is.
If the clot is big, you might find out the, err ... umm, hard way (heart attack or stroke). If the clot is small, it might block a few capillaries. You'd know this because it would ache and maybe discolor.
How can a doctor tell if you have a clot. Well, there's radioactive dye injection. But that's pretty serious and isn't done unless there's strong reason to think there's a big clot somewhere (like the brain).
A lot of times, it's hard to tell until after the fact.
So if oyu think you are prone to clots or just have habits that would make you prone to them, definitely have a word with your doc.
and cel, since you're on the Pill, if you haven't stopped smoking(sorry, left that word out last time) already, you oughtta try really hard to quit to minimize your risk of clots.
Universal Law #4721: Any joke can be made funnier with the word "goatf**ker." Corollary, any story can be made more entertaining by adding a few ninjas.
[This message has been edited by Gumdrop Girl (edited 02-27-2003).]