Hydroxycut + breakthrough bleeding?

i started taking hydroxycut 2 days ago and last night i noticed a bit of what looked like breakthrough bleeding in my underwear. ive only had once this month and he pulled out and i am on the pill. can hydroxycut mess with me and cause bleeding down there or should i be more concerned bout it possibly being implantation bleeding? im not supposed to get my period until the 26th...anyone with any advice or info please please help me out!