Thyroid problems anyone? Also pregnant.?

Before you start reading, I apologise for how long this is and I thank those who take the time to read it and possibly give me a little advice as to what I should do. I am 10 weeks and 3 days pregnant with my 2nd pregnancy (1st pregnancy stillborn at 23 weeks gestation). The first time my thyroid levels ever got tested was when I went to my GP for the blood test to confirm I was pregnant, after the results came back it showed my thyroid levels were elevated. During my first pregnancy both my antenatal clinic and my GP thought that my levels were not elevated enough to send me to an endocrinologist but were considering it because they were elevated. A few hours after I miscarried first pregnancy they tested my thyroid levels but they never told me if they were normal. Since finding out about my 2nd pregnancy I have been tested 3 times, I've been to an endocrinologist 2 times and have another appointment on the 9th of May. They have done an ultrasound on my neck and found that I have several small thyroid nodules. Now they want to take fluid from the tissue to make sure it's the thyroid producing to much hormones which is the cause of my thhyroid levels. I was reading there are complications, they said they will be using a local anaesthetic... I know this may sound stupid but will this procedure harm my baby, I don't want to lose another and I'm wondering if I should ask them to wait until the baby comes. The endocrinologist said they will not be putting me on medication at this time.