Your FSH that you got done the other day is usually enough. You could also get your lutenizing (sp?) hormone checked as well. I've never had a problem with getting pregnant...though I do have a non-D related "sticky blood" problem that causes miscarriage.
I would say to just make sure that your bgs are stable and not swinging too wildly in order to conceive. If you want to be sure that you're TTC at the right time of the month, you might want to start doing basal temperatures every morning. There's a book called Taking Charge of Your Fertility that explains your entire cycle really well. Lots of us Catholic women use this method for birth control as well as for pregnancy planning. The only gotcha is that you have to take your temps at the exact same time every day. I hate that part. I like to sleep in if I can.
Good luck! I'd love to have another baby or two around here!
