Possibly ?

So I got off my period this past Thursday and I had intercourse this morning about an hour after I felt a warm sensation down my V so I went to the bathroom and my under wear has the smallest amount of blood on it I didn't pay much attention but then I started to think because I've had sex before multiple times but I've never noticed that my cherry didn't pop because I thought it did, but now I'm wondering if that's what happened? Because I've never bleed before during nor after sex not even after my first time ? What should I think ? Should I worry ?