Did Jesus sweat blood and what did it mean?

You also say:

When it says and his sweat was as it were great drops of blood falling down to the ground, do you think it was blood and if so what was the meaning or symbol did this represent?

I think that this description, is referring to blood pigment in sweat, which very occasionally occurs in highly stressed people.  It is a condition called Hematidrosis.  See Wikipedia & The Free Dictionary.

Surprisingly, when I was a teenager, I had a boss who experienced this condition from time to time.  In Jesus’ case, no doubt the stress of a looming crucifixion, would be an explanation for why this happened, as we read in Matthew 26:39:

And going a little farther he fell on his face and prayed, saying, “My Father, if it be possible, let this cup pass from me; nevertheless, not as I will, but as you will.”

With regard to the symbology of this event, I think this was an event pointing forward to the shedding of Jesus’ blood.  It is a further illustration of the cost to Jesus of what he did for us, and the love he showed to us.

Matthew Henry (1662-1714) in his commentary on the Bible, has the following interesting comments:

That, in this agony, his sweat was as it were great drops of blood falling down to the ground. Sweat came in with sin, and was a branch of the curse, Gen 3:19. And therefore, when Christ was made sin and a curse for us, he underwent a grievous sweat, that in the sweat of his face we might eat bread, and that he might sanctify and sweeten all our trials to us.