Tsh low of 0.22 no meds

Obgyn told me that I didn't need meds since my t3 and t4 are within range but my tsh is low 0.22 she put me on birth control for 3 months and then will start clomid. If I do get preg, will I have a misscarriage or hard to get preg since my tsh is low?? Has anyone had this experience of tsh being low?