Should I be worried??

Had an ultrasound today and am 36 weeks tomorrow. Baby is measuring 2 weeks behind so 34 weeks. She is measuring 5lbs and 3 oz. She also mentioned I don’t have a ton of amniotic fluid. I asked if I had enough or if it was bad and she said I have enough just not a lot so she doesn’t have a lot of room. Heart rate and movement she said look and sound good. This is our 3rd and we’ve never had this problem so I’m not sure what to expect. Im scheduled for a non stress test on Monday. I don’t have high blood pressure or gestational diabetes and baby’s heart rate and movement have been good thus far. OB said not to worry unless I notice a decrease in fetal movement but I’m stressing myself out. I just got my actual after visit report back on the portal and all her percentages seem really low to me and it’s making me more nervous. This is our first after a miscarriage so I’m a little on edge. Am I over reacting or should I be concerned? One of the biggest things that also stood out is the HC is <2.3%?? I’ve been googling and definitely made myself feel worse 🤦🏻‍♀️