Ooh, will keep fingers crossed for you! I had a chemical/early MC (what do you call 4w6d?) last month. I was pretty devastated cause it just seemed so right. My due date was my daughter's birthday (even though I have to c-sec at 36-37 weeks, I thought that was cool) just... lots of little signs. I sobbed when the tests started getting so much lighter.
I'm starting to think I'm out this month. I know it's completely ridiculous to feel out for not having a positive on 10DPO, but still. :/ It's just not feeling like my month. Our BD was OK (O-3 and O) but... I'm just not feeling it. Of course, I didn't feel last month either. But look how that turned out for me.
OK, enough pity party. LOL
I rarely get OPK's. I pretty much O on day 14 like clockwork, so I figure why bother? I temp and that proves it to me well enough.