Long Ago But I Still Get Upset Thinking About It

Near the end of my junior year of high school two of my friends and I along with a chaperone traveled to a college campus to attend a journalism seminar for our school newspaper.
One afternoon while there we had the rest of the day free. We went to the student union center where we met some college guys who invited us to go to a local swimming place on a nearby river. After some pleading with our chaperone she agreed to let us go for a couple of hours.
As soon as we arrived at the River it was apparent they were interested in more than swimming. All three of us had lost our virginity buy our sophomore year so we paired up scattering up and down the river on blankets with a guy.
I made it plain to the guy I was with that he would have to use a rubber if we did anything. Of course he had come prepared so we made out for a while then when the time came he put it on.
Being with a college guy was different with us taking our time to enjoy the experience. As with high school guys I’d been with when it was apparent he was finishing I could feel him throbbing inside me but was more exciting.
Then he said “sorry about that”. I was confused so I asked what about. When he said the rubber had broken I panicked shoving him off me. I had never had anyone come in me before and couldn’t believe the amount running out of me.
Later I told my best friend what had happened. All of us had always been cautious about when we had sex and always with rubbers. Then she asked me where I was in my menstrual cycle. I thought for a minute then realized having that happen couldn’t have been at a worse time.
I was a nervous wreck for the next couple of weeks waiting to see if I had gotten pregnant.
Thankfully after a little scare when I was a couple of days late I got my regular visit.