Hypothyroidism

My husband and I have just started ttc (on month #2). I went to my dr for an annual physical and she ordered bloodwork- turns out I have an under active thyroid (tsh of 4.0 for those of you that are familiar with this). I'm just looking for advice. Has anyone gotten pregnant with a TSH like this? Should we stop ttc until it comes down (my dr prescribed me medication)? We have been married for 2 years and are ready for a family, just discouraging for us to learn that "our ready" may not be the same as "my body is ready".