Bleeding after Sex

Mary
So I had sex two months ago for the first time. I didn't bleed and it wasn't painful. I just recently had sex again with a different guy and I bled this time, which doesn't surprise me so I wasn't too worried about it. Then, 3 nights later we did it again and I bled again the second time. I am supposed to get my period soon so I just assumed that that was what it was so I put a tampon in when I took it out there was nothing on it. I wore a panty liner for the rest of the day just in case and still nothing. Did it happen because I need to wait so it could have time to heal? Or is something wrong with me?