Cycle #16...Cycle Day 29.

My cycles range from 23 days to 28 days. They average 26. So here I am on day 29, with only negative pregnancy tests to show for it. I ovulated later this month, for some bizarre reason. I have had cramping for the past 3-4 days, but no period. I had been so incredibly positive these last few days, but with today's negative tests I'm losing hope. I came home with a headache. I'm just so....tired. Tired of the hoping, tired of the waiting. Tired of being let down. Tired of the wishful thinking. Tired of the questions. Tired of going back to the doctor again and again. Tired of feeling like I have failed. I'm just to point where I don't know what to do. I'm trying everything we can do at this point - clomid, femara, ovidrel, IUIs, and acupuncture. Why is this so hard? I just want to be a mom. It feels like such a far away thing at this point.