Low thyroid while pregnant

an

This is my third time being pregnant and needing levothyroxin- that might be misspelled. I’m wondering if anyone else has struggled with this and if you still do after pregnancy. My second pregnancy I had monthly blood work done and my levels seemed to come back up and I didn’t need the medication any more, but the more I research the more I worry about long term issues with my thyroid. Looking for some hope I think.