Postpartum high blood pressure is more common than people think, and the fact that your BP was normal throughout pregnancy but spiked after delivery is actually a recognised pattern, so you are definitely not alone in this. The headaches and dizziness together with the high readings are signs worth taking seriously, because some mummies find it settles within a few weeks with medication and monitoring, but a small number do need closer follow-up if it lingers longer than that. My friend delivered at KKH and said her doctor put her on Labetalol for a few weeks postpartum, which helped bring things under control gradually, and she was eventually weaned off it. The tricky part is that anxiety can contribute to fluctuating readings, but it is hard to know for sure whether that is the main driver when your numbers are genuinely going high, so it is worth not dismissing the physical side of things. Please do go back to your gynae or a doctor soon and describe the headaches and dizziness specifically, because they are better placed to decide whether you need medication or further checks right now.