My period came a week early and that never has happened to me in the 6 years I’ve had my period... it’s very light but the only 2 things I can note that have changed this month is that my fiancé has came in me a few times and I started smoking cigarettes socially . I’m only asking because I’ve read some girls have had a period like implantation bleeding episode where they bled through their pants but then turned out pregnant ...

I’m just wondering if it is my period why would it come so early ?