is there such a thing as too much fiber?

hey there!
so i am doing a cleans and it has me doing two teaspoons of flaxseed husk a day, plus flaxseed oil with every meal. this has been going great! before this cleans i was also taking dr levins ultimate weight loss product which is basically all fiber (its the highest concentration of fiber i could find in a product with no fillers so thats why i am taking it) i have also been taking a fiber gummy. i am still!! not regular (i know, not the best thing to announce to the web) so i was wondering if i am over doing the fiber? irregularity is a symptom of being hypothyroid which i am for life so i am trying to get regular despite the set back.
thanks all!