First Time Sex Anxiety

So today I had sex for the first time with my boyfriend, and I am known to chicken out and be too scared and anxious but I finally faced my fears and did it. But now I'm freaking out! He did wear a condom and he didn't cum during intercourse because I told him I wanted to stop since it was uncomfortable. But I am still super anxious and need some type of relief. I have heard so many things about condoms experation, how they should be stored, and how you open them and I just want to be 100% safe since I am kinda young. Please give me some comfort and reassurance!