picc line?!

Has anyone had to have a picc line during pregnancy?! I'm close to having it done and I'm wondering about how it all works... I won't talk to my doc again til Friday so I'm curious about it All. Hospital stay? How it goes in? Will it be sore? Anything you can tell me helps!
Edited to Add: I am 13 weeks along and cannot stop vomiting to the point I've lost nearly 30 lbs. no medicines are helping so my doctor is going to have me on one to give nutrients to the baby and hydration to me.