Condom broke...but he didn't finish. Advice?

Tonight about an hour ago me and my on again off again boyfriend had sex. For a good 45 minutes. We would stop and then start again to make it last. He pulled out and when he stuck it back in he noticed it felt different. He pulled out again and noticed that the condom broke. Immediately we stopped and he never did ejaculate. It had just precum in the condom. However me being 18 almost 19 am still freaking out just a bit. Also he told me that the condoms were also spermicide? Never really heard of them before until he mentioned it. He says the chances are very slim to non existent for me to get pregnant. I would really love to put my mind to ease and I would love to know your thoughts on it. Any help and advice would be appreciated! Thanks!