Last day (on 17th day of menstrual cycle) i went to the doc and with ultra sound scan, she found out that my wife's follicles are not growing rapidly though she found follicles on day 15th. She suggested to do some tests like FSH etc on day 3 of her next cycle.

we want to become parents but don't know I'm worried now, of what is happening here.
Her TSH is around 1.6.

please guide me