I don't think anyone holds it against you that you have kids. I'm sure the ups and downs of ttc are the same no matter how many children you have. I'm not exactly sure what would happen in the followup but I am guessing an IUI w/ clomid or possibly injections? I know some women do up to 6 rounds of clomid, but that is pretty much the limit. There is a really good Clomid/Ovulation Induction board where some of the women have gone through this. Sorry I'm not more help, just cycle 1 of clomid for me. I hope that's all I need!
has your doc been monitoring you on clomid w/ u/s? or checking progesterone levels?