Thyroid help 😩 Free T4

I’m 18wks 2days along with my third baby! I’ve never had thyroid issues before. After I found out I was pregnant I noticed I was losing a ton of hair meaning my hair was really thinning which is unusual for me. I contacted my PC and she ran a thyroid test my TSH came back in normal range same as when my OB did it for my pregnancy blood work. So my PC ran a more extensive panel and it came back as my free T4 as being low, so she had my blood work done again a month later and then again after that, and it slowly is trending down, my PC has referred me to endocrinology as she doesn’t feel comfortable tracking my numbers anymore, endocrinology cannot see me until June 30 I reached out to my OB and they said to have my PC keep track of my numbers until my appointment with endocrinology. My PC Said she would reach out endocrinology to get me in sooner week later she still hadn’t heard anything so I reached out and finally got a sooner appointment for April 29th. I’m nervous I’ve never had thyroid issues before, I have no idea how this could affect my pregnancy how it could affect my baby i’ve asked this question several times and no one can seem to give me a straight answer.

Normal range for free T4 is 0.70-1.70

My numbers are

Jan- 0.62

Feb- 0.64

Mar- 0.57

I didn’t find out my numbers until today because nobody shared that information with me they just kept saying that my numbers were trending down I know it’s right under the normal range but it’s still concerning as this isn’t a normal thing for me in general let alone during pregnancy.