Confused and birth control pills help

So recently, me and the guy i like are talking of not doing condoms but instead we’re talking about me taking Lady pills, what are the chances of me getting pregnant and how should i go about this? Im very new to this and kinda scared. We’re both in college and I’m still not ready to be a mom if ever. I need to think this through and advices can really help. Thank you.

Side note: Also asking for a relationship advice (we’re having sex already, i lost my V card to him just recently but we don’t have any label. i wanna clear this thing up but i don’t think he’s the commitment type and it would hurt me for reals if I knew that I’m just his “pleasure and emotional outlet”. HELP )

Edit Update: sorry i mistook Plan B for birth control pills. However, the ones that i got has like the double effect of Plan B and birth control pills. Anyone familiar? How do i use this the correct way? Thank you again