Period due on 8/1

Sasha
I just started crying while reading something not very emotional at all. I don't usually get like that before periods! (Hard not to be excited over every little possible symptom, right?)
I just turned 30 this cycle, and I am so very ready for a baby. It's our third cycle of trying. I had a chemical pregnancy last cycle. This month I started using OPKs for the first time, and although I got a definite LH increase, it was never quite as dark as the control line. I'm really hoping I still did ovulate, but I'm not sure if maybe the chemical pregnancy made the cycle weird and I might not have ovulated?
Who knows. But I can't help but notice every possible symptom. In addition to the random tears, I've felt really weak the last two days, and had some lower back pain and some intermittent cramping. 
How about you? Any symptoms thus far? Are you feeling optimistic?