Hi Kellie -
Good luck on conceiving, first of all. We have a great forum here for pregnant/nursing mothers, with some amazing ladies who would, I'm sure, have all kinds of great ideas for you.
I'd recommend you step on a scale. Sure, its not pleasant, but its a great way to have a starting point. And that way, when you're at your goal, you know EXACTLY how far you've come.
In any case,

and keep posting! Can't wait to hear more from you soon.
Amanda