The thyroid panel at healthcheckusa.com costs $75, the female hormone panel is more like $200.

What time of day was your TSH? It matters. As Nancy said, however, TSH is a LOUSY indicator of thyroid function. You can have a 'normal' TSH and be abnormal in one or both forms of the necessary hormone, namely Free T3 and Free T4.

So, get the tests from healthcheck. Messed up hormones would tend to make your periods really ugly (I think) before they would make you not have them. Nursing, however, can make you not have them. This is normal for nursing mothers for many months after the birth of a child, btw.