Wah, three caesars in a row then BTL, that's quite the journey! Honestly, most of my mum friends who've done multiple caesars worry about the same thing at 10 weeks, jadi you're not alone. Since this is your last pregnancy and you've had two previous sections, definitely kena discuss with your OB early about scar tissue, placental position, and the safest delivery plan, they'll want to monitor closely throughout. Wishing you a smooth pregnancy ahead!