Two small dots of blood on the dressing is generally considered normal in the early recovery phase, light spotting or a bit of dark blood along the wound line is something many mums have noticed and it usually isn't cause for alarm on its own. That said, there's a difference between minor spotting and something more worrying, so it's worth watching for signs like the bleeding getting heavier, increasing swelling around the belly, the wound starting to look like it's opening, or pain that's getting worse rather than better, those would be reasons to go in sooner rather than later. My own experience after my C-section was that the dressing looked a little alarming at first, but my nurse had already told me small spots were expected as long as nothing else felt off. So the general thinking is: two dots, no other symptoms, probably okay to monitor closely, but if you're unsure or it starts spreading, always better to call your gynae or head back to the hospital to get it checked properly.