Bleeding during ual ?

My husband and I just tried to have but, I started bleeding. And still am. I am only 20 so it can't be menopause. it was pink in color. I got over my period a week ago. We had 2 days ago and nothing. It didn't hurt and we didn't use lubrication but there was no need. He wasn't rough or anything. I don't have any stds nor him it wasn't him that was bleeding. I looked everything up online and i can't find what it could be I have been ually active for almost 2 years. he is the only man I have slept with PLZ HELP ME!!!