Had sex and a gush of blood came out during sex. I’m 17 weeks. Has that ever happened to anyone?

Lane

I’ve spotted before during or after sex but this time it was a lot. And when I used the restroom I noticed small clots. I have a fetal Doppler and everything seems to be ok with baby. But I’m freaking out. I’m definitely calling my doctor tomorrow morning. Just wondering if it’s happened to anyone?