Birth control pills

Meghan • 19, future nurse, living day to day as best I can
I have an appointment this morning to get my IUD removed (FINALLY) due to months of issues with random spotting and cramps. I'm going straight back on birth control pills bu it's been a while so I have 2 questions.
1- Do they make you bitchy? I used to be such a bitch and was mean to everyone and I don't want that to happen again...
2- How long did it take you for your period to be regular when you started the pill?
Thanks in advance ❤️