I don't know but can you get your last period even when your pregnant, I had sex like 3 weeks ago and I'm on period now and it came a week late, never has been late before, could I be pregnant? And this is weird, a week after sex blood came out of me then I had no idea if it was a miscarriage or what? But it was soooo light, so I thought that was my period but I'm on right now so I don't really no, can I be pregnant? I'm 16 so I don't know if I'm just panicking