have you started to Liver Flush yet? Your bile might be shy from having so much time off while fasting.....
Be gentle with your system.... no more O.D of senna tea!!.... Be patient with your body, and relax..stress causes constipation more than anything else!
Liver Flushing will help get you regular again... you might also want to look into getting tested for a gluten allergy.
Drink lots of warm water with lemon throughout the day as well.... that will help.... and add things like cayenne to your meals..