very scary for me

Breanna • 25 married to my high school sweetheart with one beautiful daughter.
This whole pregnancy thing is very scary for me. And at the same time as being scared I'm confused. My fiancé and I had sex and it made me cry with no idea why. And along with that he told me that he saw light brown stuff after we were done which scares me idk what's supposed to happen and what's normal. Someone please help me.