Birth control question

I’ve been with my boyfriend for awhile now. We have done some physical things. But, we have never had sex. I want to make sure I’m protected with some form of birth control first. I was doing some research and I want to try the pill. My only concern is how it’s going to change my mood. I’m a college student with very high anxiety and I want to know if it will make the anxiety worse or not? I also would like to know if people have experienced trouble focusing as well. What do I expect? What birth control method would you recommend me getting on. Thanks in advance!👍🏻