I Have Had One Session Of Botox In My Forehead

I have had one session of botox in my forehead 3 months ago. It has just dawned on me that my period cycle only stated to become erratic after this. Last 4 periods have come within 2 weeks of each other and this one is still going after 14 days. I am 43. Can botox effect your period cycle? If so is there a website you would recommend where I could find more information?