I need advice about Clomid!

So my doctor prescribed Clomid and I'm supposed to have an IUI following me taking the Clomid, BUT my husband's work won't let him off to give a sperm sample this month so we may have to wait a few months before we get to try when he can get a day off. My question is, since I already have the Clomid should I take it anyway this month and try conceiving on our own or wait it out? Of course I would discuss it with my doctor but I just wanted to hear of the success rate of Clomid by itself without an IUI..