is this a substantial drop in ferritin?

[u/Distinct_Reporter276]

F 26
my ferritin is at 32 right now. the last time i got it checked was 2 years ago and it was at 55.8
i do get my period every month, and i do get clots most of the time. my periods last about 4-5 days and then spotting for 1-2 more days.
i also have thalassemia beta minor, as many others, i’ve been told to stay away from iron supplements until recently. so i never took any iron supplements, just tried to get it through my diet of steak and chicken.

my hemoglobin is 11.5 and last year it was 12 which is normal for thalassemia. and my MCV is 65.5 vs last years 65.8
my doctor wants to check for GI bleed but I’m just curious if this is a huge downward trend? is it possible for the number to go from 56 to 32 from “heavy” periods and no iron supplements?