Synthroid for thyroid problems

Octavia • Fri, Mar 07 2014 • 2 daughters and 1 son Janiya 15, Joy 14, Kaden 10 months and expecting baby #4 September 22nd

Hi I wanted to know if anybody is on Synthroid and they was late for af this is my first month on it and I'm 4 days late just wondering is it do to the meds