Mood swings on birth control

Luna

So I started birth control about a month ago and I’ve been having HORRIBLE mood swings ever since. I am generally very positive and never get angry so it’s been really hard to deal with :( I’ve been dating a new guy who I really like for a few months now and I feel like I’m starting to push him away because of this. Is it normal or do I need to switch birth controls? And if itsnormal, how long will it last? Thank you!