(thyroid stimulating hormone
) from the brain works upon the thyroid gland to produce thyroid hormones very essential for you. Whenever thyroid produces fewer hormones than required, TSH levels go up. Hence you were advised to take thyroxin at a dose of 100 mcg. Reduction of thyroxin to 75 mcg was OK for you and your TSH level came down to 2.7, which is within the normal range. Continuation at the dose of 75 mcg would have been more appropriate.
Weight reduction needs strict adherence to diet and exercise regimens, in addition to thyroid hormone supplements. It takes time. TSH of 87 shows that 25 mcg dose is inadequate for you. It is nothing very serious. It means that as you need more thyroid hormones, TSH has gone up.
As your initial TSH was 250, you may not have any special symptoms when TSH moves up from 2.7 to 87. I am sure your physician will recommend appropriate dosages next week, when you meet her. Meanwhile relax.
Hope you get over your thyroid/weight problems at the earliest and thanks for using healthcaremagic.com.