We have been dateing since I was 17

So what is your question? What do you need help with? Do you have a job where you can support your girlfriend and child?

Is sexual contact with a 16 year old legal in your area?

Is sexual contact with a 16 year old legal in your area?

More to the point, is a 17 year old who has sex with a 14-15 year old guilty of statutory rape in OP's area (If by "dating", OP means "having sex with")?