Today I went for my first OB appt and the Dr. performed some blood tests, collected urine and the first US. I'm 7w2d, and baby HR 154bpm. I was really happy with the normal results, but few hours later the nurse called me saying that the first blood results came and my TSH levels are abnormally high - 6.4 - and should be below 2.6 during pregnancy. I was never diagnosed with hypothyroidism before getting pregnant, so it was a bad surprise. She prescribed me Levothyroxine 25mcg and I'll start taking tomorrow, but I'm really scared. Anyone else have been through something similar?