Hey,
Take some deep breaths..it IS the anxiety talking. I used to freak out about taking asprin!!
Your doc has prescribed this for you, to help you, try and take your mind off things (easier said than done I know!)..read a book, chase your kids, have a luag, try not to think about it. If you do feel that the med is having any adverse effects, call your doc or (if you have it) a medical hotline. try not to stess too much, don't let the anxiety win!
Best of luck.
Meg