CD 27 / 12 DP IUI - losing hope...

Things aren't looking too good. Another BFN this morning and my temp is dropping (it's gone from 98.5 to 98.2 over the last few days). Also, having my usual pre-period cramps. It looks like another one bites the dust. Pretty bummed out. I now need to decide whether we'll have another IUI this coming month or hold it off. I kind of want to get this one out of the way so we can decide what to do next.