Plan B

Okay I’m super freaked out. I had my last period 2 weeks ago. I took plan b last Sunday and now I think I’m on my period again (maybe it’s just spotting? Idk how much is considered spotting). I have cramps and I’m tired. I know plan b makes you go on your period early but I’m just super scared and I can’t exactly talk to my mom who is a nurse because she would absolutely kill me. Please help me through this. Going through it alone is terrible and I have no one to go to.