Under the laws of all states in this coutnry, if you have received an out of state subpoena served upon you in your home state to attend trial, the state from which the subpoena has no jurisdiction over you to enforce it. In any event, I suggest you consult with a criminal defense attorney in your locality to write a letter to the person who issued it setting forth your pregnancy issues and inability to travel as well as lack of jurisdiction over you. Such an attorney can be found on attorneypages.com.