Thyroid reference range in pregnancy is diffrent as baby requires thyroid from mother so taking thyroid tablet is a must for you. Dont get scared and stop medications. This thyroid is for your baby and with
tsh level 4, take 12.5 for a month and repeat tsh. Dont worry about leucocytosis ,nothing to b done. Fasting
sugar is not that high, are you overweight? If no, then do
hba1c, which is 3m glucose profile and then we can decide about metformin.