I have a 6 year old son, was also unplanned, so I completely understand how frustrating it is actively TTC! (We hadn't used birth control for almost two years though up until TTC last year, been off the pill since May 2006) We are on cycle 10 of trying for #2
Am TTC number 4, I have an almost 8 year old daughter, 4 year old son and I had a baby girl last November who died at 5 days old. I didnt 'try' with any of them, but have been TTC this time for 8 months with no luck.