((((Pegs))))

I just did a quick google for you and found this on the NHS website.

Your vomit is green. In this case you are probably bringing up bile, a fluid the digestive system uses to digest foods. This suggests you may have a blockage in your bowel (see below).
There is blood in your vomit or what looks like coffee granules. This is a sign of a peptic ulcer.
You also have severe stomach pain.

http://www.nhs.uk/conditions/vomitin...roduction.aspx

Maybe call NHS direct and ask them. I hope that you feel better soon