Dear OP Please try to understand that they are your husband's parents. You cannot dictate them to come according to your convenience. Also your husband is right in saying that he cannot ask them to delay their arrival as they will be offended. Dont get stressed. Come on you are going to be a mom soon. Have a little patience as it will be very handy in the coming months with a crying baby in your arms day and night. Let them come and treat them nicely. Do not hesitate in taking help from your mother in law . It will make your hubby happy too. In such an important event of your life you need your elder's blessings. IF they are not etremely annoying, I think you can put up with them.