So I'm 18 and I'm still a virgin so I'm not concerned about being pregnant or anything but I get my period tomorrow and it's probably the most regular thing in my life. I started working out this month.. And I'm not sure if this is why but I've been spotting on and off for the past 2 weeks.. At first I wasn't sure if my period was coming early but then it just stopped, nothing more than a bit of blood on my toilet paper.. Should I be concerned or is this normal? I know working out a lot does influence your period but I'm not sure.. Please help!