Oy, mommy, I totally understand the worry, 27 weeks and numbers all over the place is stressful talaga! Please show your OB these home readings next visit (or call her clinic), she needs to see the pattern kasi she knows your full picture, especially since your OGTT was normal and your post-meal readings are good. Hindi ko dapat i-guess kung kailangan mo ng insulin or adjustments. A few of my mum friends had similar situations, and honestly, ang OB lang talaga ang makakasabi based sa trend and your baby's needs. Keep logging those numbers, very helpful siya! In the meantime, just follow what your OB said about carbs (she gave you that limit for a reason), and try not to stress too much; stress mismo affects blood sugar din. You're doing great by monitoring. Let me know what your doctor says, rooting for you both!