Iron levels went from normal down to 19 in just over a month and having symptoms of anemia?

July 23rd I had to have a blood test to check my iron levels to make sure I wasn't anemic and to make sure I wasn't a bleeder before a laparoscopy I had on the 25th, had surgery as planned so assumed my iron levels were fine... I began noticing in August that my hands were shaky at random and that I would get very light-headed, I also had cold hands even though the rest of me was warm and was very very tired all the time which are all symptoms of anemia... went to my doctor andtold him I think I might be anemic... he did a full blood count and checked my iron levels completely... came back a few days later for the results and found out my iron level or something was meant to be around 50 but for me it was only 19... my storage was at the higher end of normal due to me being a carrier of Haemochromatosis... why has my iron suddenly dropped so low in that amoint of time? My dietary habits haven't changed in the slightest, I also only eat at night so food can't have effected it and even if it did, would it really cause me to even develop symptoms of iron deficiency anemia just because iron levels can fluctuate a little cause of food?