THANKS FOR CHOOSING HEALTH CARE MAGIC,
it is common to lose weight till few months even after you stop doing exercise...
if you follow the good diet ,and normal activity you can continue losing weight
yes in hyperthyroidism
,excess sweating may occur
when you donate blood ,the procedure generally occurs in aseptic conditions with all precautions regarding almolst many diseases like hiv ,hepatitis
if you are so doubtful about this you can go for a test(discuss about window period of hiv when you go for counselling
,to be more perfect)
even in case of diabetes
occurs on its own so get your blood glucose levels tested.
your work,if includes too much stress may also cause weight loss ,so try relaxation techniques
hope i answered your query
feel free to contact me for further queries