i was over age when i got pregnant and him under age he is illegal and i dont know if he can even sign it with out an id. but he wants to sign it very badly but im scared i will get in trouble with law
It's not his signature on the birth certificate that matters. It is whether or not anyone reports you to the police. His signature on the birth certificate won't matter. Keep in mind that him being the father does not mean that you and he had sex. Lots of people have babies through artificial insemination. Don't admit to anyone that you've had sex with him and tell him the same. Another thing that you could consider doing to protect yourself is marry him. You are allowed to have sex with your husband, even if he is under 18. Good luck to you.
I would not say that whether or not your boyfriend signs the birth certificate does not matter. In California, if a man acknowledges fatherhood in writing, he is the putative father -- that is, he is presumed to be the father. I would expect that if it came to the attention of the authorities that he had signed the birth certificate, there is probably a prosecutor who would want to use that as evidence of a sexual relationship.
While it is true that there are other ways to get pregnant, it is not normal for 16-year-olds to provide samples to be used for artificial insemination.
More importantly, what would really matter if you were charged with a crime and had to defend yourself is not whether there is some possible alternative explanation (other than sexual intercourse with a minor) for you to have become pregnant by him. What would really matter is "what will a jury think."
Whether or not your boyfriend signing the birth certificate will come to the attention of the authorities, I cannot say. I have not researched the mandatory reporting laws that may apply to any hospital or hospital personnel regarding this matter.
You may wish to hire an attorney who will agree to take responsibility for your case and have him consider the specifics of your case from all angles.
This answer is based upon the minimal information contained within your question. There may be other information which could modify or negate the answer I have given. For particularized legal advice, you're always best advised to consult with an attorney personally, so that the relevant "back and forth" can allow for obtaining all information necessary to a complete answer.
Years licensed, work experience, educationLegal community recognition
Peer endorsements, associations, awardsLegal thought leadership
Publications, speaking engagementsDiscipline