If I avoid a subpoena but am aware they are trying to serve me what happens? The officer said to pick it up or I get a warrant.

I agree with Mr. Pullman. They are bluffing you. It is their obligation to serve you personally with a subpoena; they get paid for this. If they can't do their jobs, you don't need to do it for them. This may or may not occur, but be aware of something; If they wind up leaving the subpoena with your mother and you call the attorney who issued the subpoena saying, "Hey, I got the subpoena, I'm pregnant, I can't be there," that makes the service on your mother as legitimate as if it had been served on you personally. This is because you acknowledged receiving it in your telephone call. You may have already testified at something called a preliminary hearing. It is a hearing where testimony is given but there is no jury. It is much less formal than a trial. Does this sound familiar? If so, either party is permitted to serve you to testify at a trial. If you wind up getting served, the courts are overwhelmingly solicitous of pregnant witnesses. They would try to be extremely accommodating. Congratulations.