I feel almost confused

Last night my boyfriend and I were having sex, and right as we both climaxed and we were finished I started laughing/ crying...but mainly crying....and I truly don’t know why. I was wondering if anyone has experienced this and if anything came of it? Like one friend of mine said she found out a few short days later that she was pregnant. (I would be so happy if that were the case) but please any insight would be amazing