😢💦💦💦😧😯wtf!!

This has only happened a few times out of the 1000 times we have had sex but.....After me and my SO got done having sex I started crying. I wasn't sad and I wasnt extremely happy. I was embarrassed. He asked what's wrong and honestly I didn't know. Has anyone else had this happen to them? I can't be the only one. Is there something wrong with me?