Hi Louisa
I have been ttc since may 2007 so almost 4,5 years now but I am fairly new on this particular forum.
I know how you feel, it seems most of the people I started out with too are gone now. The one person who had been trying for longest (which was 3 years at that time) later conceived twins. I feel that time flyes by and have started concidering other options too so that I will not be childless forever if I can help it.
Amber