hello,
thanks for the query.
Normal levels of TSH during second trimester is 0.2 - 3.5 mU/L. It would be better if you get your free t3 and t4 levels.
You have sub-clinical
hypothyroidism.
If you don't start thyroxin, there are chances that your baby to have
congenital cretinism. better to start thyroxin as early as possible.
The normal side effects can include: nausea,
drowsiness, weight gain .
Stop using Thyroxin and get emergency
medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have any of these serious side effects:headache;sleep problems (
insomnia);nervous or irritable feeling;fever, hot flashes and sweating.
hope this helps.
regards,
Dr Nilofer