I was feeling amazing in the second week and then this week... the third week... I have tanked out completely. Moody, headache, insomnia. I started my menstrual cycle at the beginning of the week and noticed the day before that I was so down. It has not gotten any better. I know that it takes 6-8 weeks for this med to work but is it normal to have this happen at 3 weeks after feeling great?