Hi there, thanks for asking. As you mention it is a serious issue. It is good that you are checked for thyroid function. Hypothyroidism
can bring increased weight, and also slow heart beats. It could be also related to sleep apnea
, because it is common in obese people (your BMI is 35.45) and it also could lead to slow heart beats. Other symptoms of thyroid hypofunction are change in your hair and skin texture and also constipation
and loss of concentration and may be low mood. Other symptoms of sleep apnea are fatigue
during the day and also being sleepy all the time, probably lower mood than normal. If you have allergy, deviated septum, enlarged tonsils, TMJ problem or you go frequently to washroom in the night or you have headache in the morning, this could be more likely. It is good that your basic electrolytes and also magnesium
and calcium be checked. I wish the best health for you.