Thyroid issues anyone ever had this issue

Ms. • Mother of 4👧🏾👧🏾🌈👶🏾 👶🏾may 🙏🏾🙏🏾

Hey mom's so at my 15/16 wks check up I was told my thyroids were low and they would retest again. So here I am at 19wks 2days And just got blood work done now their telling me it's still low so I have to go for a thyroid US and she said she didn't wanna start me on meds right away being that it could be harmful for the baby. I'm just all over the place with worry never had this happen before (two girls already) and I don't know what's to come or how to go about it. Anyone ever face this issue? Were you put on meds? How did the pregnancy go? Any info will be greatly appreciated.