32+3 measuring bigger!

Hi guys so im currently 32+3 with my 2nd baba.. i visited my midwife at 28 weeks and she measured my tummy and said i was measuring 32weeks which i thought ok (i measured 2 weeks bigger with my first from 20weeks and went to 41weeks) but then i went for my appointment a few days ago at 31weeks and im measuring 37weeks! Its made me feel really anxious about my baby coming alot sooner lol midwife said she isnt worried because i dont have gestational diabetes or anything and told me to just be prepared but i still dont know how i feel about it lol what do you guys think? Has anyone measured bigger and had early babies? 🙈