Hi, I'm 26 yrs old I'm a mother of 2 little girls 4 and 2!

OK my LMP was in June 19, 2014. I was due in July 21. Missed. I was wondering if getting back on Levothyroxine can cause a missed period? I was taking levothyroxine 127mcg, the last time I took it was back in Feb 2014! Due to no insurance! Then got back in June 28-29, on 75 mcg, can this low dose cause my missed period?

Thyroid issues can cause missed and irregular periods. Getting back on the wagon can cause reproductive issues. Have you taken a pregnancy test?