My husband won't get an SA

 I got my dr to write a lab order for an SA (semen analysis), but my husband won't go and get it done.  He said that he won't get it done until next year.  He may have been kidding but I'm not sure.  He's not ready to do anything beyond me on meds (IUI, etc).  I don't think that I will do any more meds if he won't go get the SA done soon. I have gone to get bloodwork done and two u/s but he won't do anything.  I don't know what to do.