The pituitary gland controls the release of gonadotropins, which are things such a luteinizing hormone and follicle stimulating hormone. Basically what controls a female's cycle and hormones and all of that good stuff.
I don't see why it'd be too much of an issue not to have one. I mean yeah, it's gonna screw up your hormones some or they may not exist?, but I'm sure with some supplements and things like that it wouldn't be too big of a deal.
Wishing you the best Kirsten and sending positive thoughts your way.
Oh, and normal is no fun! It's better to be extraordinary and original! :D