Birth Control?

Okay so I am in my first ever serious relationship like I've already lost my virginity to him and everything we use condoms but I'm thinking about starting the pill? I am entirely clueless on it however as like I said he was my first and has really been the only guy I've wanted to be with like that. But I'm rather nervous about the side effects and even just how to go about getting it? I'm nearly 19 but I have major anxiety about things like that.

Can any of you give me your experience with the pill (side effects good and bad pretty much anything) and how you went about getting on it? It would be very greatly appreciated!