Pregnant? help with dates? thanks!?

My LMP was 8/17/09. I had a 6 day heavy AF. I'm almost 5 months post partum with baby #4. (I'm also feeding,down to about 3 times a day). As far as I know I am ovulating each cycle, mostly late like around cycle day 20. My indicators are EWCM, side pains etc. My cycles lately have been about 35 days average. I started feeling side cramps around CD 17 all the way through CD 20. EWCM through cd days 17-20. Lots of unprotected BD'ing CD 20 and 21. Since no more side pains no more EWCM since CD 21. My cervix is really firm and closed so tight it feels like a pointy knob at the opening. (TMI). When do you think I could test? Do you think we might have caught that egg!? :) You'd think I'd be more experienced after 4. We didn't really plan to do this, we were on vacation and it was great :) thanks ladies!