TTC supplements messing with cycle

Has anyone experienced pregnacare messing with their cycle?

I'm normally like clock work .. 33 day cycle.. never late..Never early.. like clockwork! I started taking the TTC supplements 6 weeks ago abd bang period was 8 days early?! I don't think that's a coincidence .. I have no idea when I'm ovulating now and I feel so hormonal.. more than normal 🤣. My sister said its because I'm stressed .. but I'm not stressed!

Has anyone else had this problem ?

Thanks !