Spotting after sex

Cheyenne
I lost my virginity two weeks ago. I bled a little bit, not so much the next day tho. 
Now I slept with someone else this past Monday and the next day I was spotting a lot. Yesterday, I slept with him again and now I'm spotting again. And it's definitely not my period. Is this normal? 
edit: someone mentioned that my cycle changes after the first time and yup I got my period soon after making this post