Has anyone ever had very bad indigestion with eating a high fiber diet?

I decided at the beginning of this year to begin taking care of myself as much as possible.I've cut out all refined sugars,fried foods and fast foods,basically anything that isn't good for you,I don't eat it.The problem I've been having is since I've introduced nothing but healthy things,especially fiber rich foods,every night I have terrible heartburn and indigestion,with occasional nausea upon rising.Just wondering if anyone else has ever experienced this and if it will eventually subside after my body adjusts to this.Thanks to all of you in advance.