Greenie, just remember that you generally don't O on the day you get a + OPK but a day or two after that. So more than likely it sounds like CD 19 would be more likely! So maybe you're not even as far as you thought!
As far as any other symptoms, I don't really think so. My boobs are a little bigger and more tender, and I still felt like crap when I got up this afternoon. But I ate some oatmeal and drank some OJ and felt better. I know this may sound crazy, but I am actually getting a little nervous about my test in the morning because some of my other symptoms have subsided! I don't have cramping quite as bad anymore, and I feel OK tonight. Not quite as dizzy or tired (although I felt exhausted when I woke up). Just worried I guess since I've miscarried before. I go at 9am and I think she will probably call me back tomorrow afternoon with results. I hope so at least because I'd really hate to wait for them!