I don’t know why I’m so nervous

Here’s the story. I’m super paranoid when it comes to birth control and getting pregnant. I’ve been talking to a counselor but I think the only way to get over my fear is to continue to not get pregnant. My boyfriend and I have been dating for a year and we probably have sex about 5 times a month. I’m on the pill but I always try to avoid sex during the time that I would ovulate if I was not on the pill. When we do have sex, he uses a condom and pulls out before finishing. Anyways, we were messing around and going to try anal for the first time on day 14 of my cycle. We tried for like 5 minutes and it just wasn’t for me and we weren’t using a condom this time. I started freaking out thinking that there is just enough precum on the outside of my vagina to get me pregnant. (I know it’s unlikely but there are horror stories on the internet). I know his penis never went inside my vagina, but I can’t remember if it touched the outside and now I’m freaking out thinking I’m pregnant. Please tell me I’m crazy and being too paranoid. My period is due to start within the next week