See now there is more to the situation, what you have to understand is that we were going SOLELY on what you presented to us and you were hateful with your response, namecalling, etc. I can understand being frustrated with the entire situation, my DH was laid off last year and it was a stressful time and I can only imagine how much more stress would be added to it.
But the facts are this, you created a child with a man that already had 2 children. You may not like to hear it but he has a responsbility to those children BEFORE yours simply because there is a court ordering him to be responsible.
If you want your child to be taken into consideration then you have to file for the modification. If your state laws allow for a modification based on subsequent children. However, you should be careful because filing for a modification and sometimes backfire. If his income has increased, if her income has increased, if she has had more children, and a number of other factors could mean an upward modification.