Spotting/bleeding help! :(

I'm 9 dpo. Yesterday I felt subtle cramps and today I've felt some acomponied by some bleeding. It started out brownish and now seems like my peirod only not as heavy. My peirod isn't supposed to start for another week...

Could it be ib? Or my peirod is really early? When will I know the difference? Help please! Ttc my first with my husband. :(