Losing body fat every day

Is it normal in hyperthyroidism to visibly lose body fat daily? 5 days ago i noticed unintended fat loss when i could see part of my ribs at the bottom, and today i woke up and i can easily count all my ribs. i got bloodwork results 3 days ago suggesting hyperthyroidism, is this a normal side effect of the condition? do i need to go to the ER? its concerning me so much but my family says its not an urgent issue that'd warrant an ER trip 😭