I'm 28 . Two children. Tubal ligation since 2011... Cut and burn as far as I know. Never had any pregnancy scares or anything since then. I track my period like clockwork every month for the last three years. My period started Nov. 19th and ended Nov. 23 ... I wasn't supposed to get my next period until Dec. 13th.. I got my period again Dec.4th!!!! 9 days early. Is this normal.. THIS HAS NEVER HAPPENED TO ME. No birth control because I had my tubal and I'm married so..... .. No diet change. Like what is going on ?????????