I'm being sued for child support by my ex gf
Did you and your ex talk about child support before this?
I want to talk with my lawyer first before making a decision
I know that divorces can something be nasty.   Your child should be the most important thing in your life.   It is important to work out a support arrangement so that you do not lose the child.
I can't help but feel like I'm being used.
Regardless if your ex is doing it for the right or wrong reason, your child is the priority. If you paying child support helps raise them into becoming a better adult, it's worth it.