I’m taking plan b in the morning and need some words of encouragement

I’m scared of the side effects. Honestly, I know the chances of me being pregnant are tiny, closer to the side of impossible. But I’m taking it to prevent the slim chance as my life is just starting. I just need reassurance I’ll be okay, and so will my body. Preferably from other women who have taken it, or people who know a lot about it. Thanks.